{"title":"Mercury 8-9.9 HP 300 Hour Kits","description":"","products":[{"product_id":"partsvu-lower-unit-gear-lube-oil-pump-f-standard-quart-bottles-fits-3-8-16-drain-plug-includes-8mm-adapter-pv1005051","title":"PartsVu - Lower Unit Gear Lube Oil Pump - f\/ Standard Quart Bottles - Fits 3\/8\" - 16 drain plug - Includes 8mm adapter - PV1005051","description":"\u003cp\u003e\u003cstrong\u003ePartsVu - Lower Unit Gear Lube Oil Pump  - f\/ Standard Quart Bottles - Fits 3\/8\" - 16 drain plug - Includes 8mm adapter - PV1005051 (gear lube sold separately)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA must have for every DIY mechanic, this versatile lower unit gear lube pump takes the guesswork out of the job. Simply drain the old gear oil, attach the pump, efficiently and effectively pump in the new oil, and get back out on the water for more boating fun!\u003c\/p\u003e\n\u003cp\u003eWith the included adapter, this pump will fit \u003cem\u003e\u003cstrong\u003emost \u003c\/strong\u003e\u003c\/em\u003eall outboards and sterndrives, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYamaha\u003c\/li\u003e\n\u003cli\u003eMercury \/ MerCruiser\u003c\/li\u003e\n\u003cli\u003eSuzuki\u003c\/li\u003e\n\u003cli\u003eTohatsu\u003c\/li\u003e\n\u003cli\u003eHonda\u003c\/li\u003e\n\u003cli\u003eJohnson \/ Evinrude\u003c\/li\u003e\n\u003cli\u003eOMC\u003c\/li\u003e\n\u003cli\u003eCobra\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMost all outboards and sterndrives produced by US manufacturers will use the standard 3\/8\" fitting. \u003c\/p\u003e\n\u003cp\u003eMost all non-US outboard and sterndrives will require the 8mm adapter installed on top of the 3\/8\" fitting.\u003c\/p\u003e\n\u003cp\u003eThe pumps cap adapter fits all standard quart bottles with a 28mm or 1.125\" opening. \u003c\/p\u003e\n\u003cp\u003eA rubber cap is included to keep the pump clean in between uses.\u003c\/p\u003e","brand":"PartsVu","offers":[{"title":"Default Title","offer_id":46932990066979,"sku":"PV1005051","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/yamwpump.jpg?v=1698781778"},{"product_id":"mercury-8-9-9-hp-command-thrust-bigfoot-only-300-hour-service-kit-8m0120867-s-n-0r042475-above","title":"Mercury – Command Thrust 300 Hour Maintenance Kit | FourStroke Service Pack | Precision Marine Components | 8M0120867","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury 8-9.9 HP EFI – Command Thrust 300 Hour Maintenance Kit | FourStroke Service Pack | Precision Marine Components | 8M0120867\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOverview\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThere’s a certain comfort that comes from knowing your outboard is ready for whatever the day brings—smooth tides, choppy water, long drifts, or a quick run back to the dock before the weather turns. When you own a small but hardworking Mercury FourStroke, routine maintenance isn’t just a box to check; it’s part of the rhythm of boating. You service your engine because you trust it, and you want that trust returned every time you turn the key.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThe Mercury 8M0120867 300 Hour Maintenance Kit makes that ritual feel simple and satisfying. Everything you need is right where it should be, built to the same standard as the engine itself. It’s the kind of kit you’ll be glad you had on hand—reliable, complete, and designed to keep your Command Thrust outboard feeling crisp and dependable for seasons to come.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eKey Features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eComplete maintenance kit for Mercury 8-9.9hp FourStroke Command Thrust outboards\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eHigh-quality filters with premium internal pleat counts for superior filtration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIncludes fuel filter, oil drain seal, thermostat and gaskets, spark plugs (two), gearcase seals, water pump impeller kit, and anode\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eHeavy-duty, corrosion-resistant housings built to withstand harsh marine conditions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eDesigned to match all original equipment specifications for guaranteed fit and function\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEng\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eine \u0026amp; Boat Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFits Mercury 8hp and 9.9hp FourStroke Command Thrust engines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCompatible with carbureted and EFI models\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIntended for engines with serial numbers 0R042475 through 1R279944\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCommonly used on jon boats, dinghies, sailboat auxiliary setups, small fishing rigs, and tender craft\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eA w\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eell-maintained small outboard feels different the moment it’s dropped in the water. Idle settles in smooth and steady. Throttle response feels tight and clean. And the shifts—especially on a Command Thrust—snap in with reassuring precision. This kit helps bring all of that back by refreshing the essential wear components Mercury designed the engine around.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThe new impeller restores strong, reliable cooling flow. Fresh spark plugs help the engine fire quickly and evenly, even after long storage. Updated filters keep fuel and oil free of contaminants, adding protection you can actually feel when the motor is pushing a loaded boat against wind and tide. And because every part is built to Mercury’s exact standards, installation is straightforward, and the fit is secure and confidence-building.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhether you fish shallow flats at dawn, run gear for work, or cruise slow along the shoreline, a complete 300-hour service brings back the ease and satisfaction of using an engine that just works.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhy Buy OEM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eGenu\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eine Mercury Marine part built to match factory specs\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eLong-lasting materials that stand up to freshwater and saltwater use\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMore cost-effective over time than mixing aftermarket components\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEnsures precise fitment with no unexpected surprises\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eHelps maintain engine reliability, resale value, and total ownership confidence\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhen\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e you’re taking care of a small outboard you rely on day after day, OEM parts are simply the practical choice.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFAQ\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ1: Which engines does this kit fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It fits Mercury 8hp and 9.9hp FourStroke Command Thrust models within the listed serial number range.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: What makes this kit better than aftermarket options?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Every component is engineered to Mercury’s original standards, ensuring proper fit and long-term durability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How do I confirm this is the right kit for my engine?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Match your serial number to the range 0R042475–1R279944, or check your owner’s manual.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Can this kit be used in both fresh and saltwater?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes, all included components are designed for harsh marine environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation easy for most boat owners?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e If you’re comfortable performing routine service, you’ll find this kit straightforward and well-organized.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935248077091,"sku":"8M0120867","price":195.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8M0120867_Main.jpg?v=1760631371"},{"product_id":"mercury-8-9-9-standard-gearcase-only-300-hour-service-kit-8m0120837-s-n-0r042475-above","title":"Mercury – 300 Hour Maintenance Kit | FourStroke Service Package | Complete Engine Care Components | 8M0120837","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury 8-9.9 HP EFI – 300 Hour Maintenance Kit | FourStroke Service Package | Complete Engine Care Components | 8M0120837\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOverview\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThere’s a special kind of pride that comes from owning a small FourStroke Mercury outboard. These engines aren’t loud or flashy—they’re quiet workhorses that faithfully push you across glassy coves, help you troll the shallows, or carry you to that tucked-away spot only a few people know about. But even the most reliable outboard needs the occasional deep service, and when the 300-hour mark rolls around, you want the job done right.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThe Mercury 8M0120837 300 Hour Maintenance Kit gives you everything you need in one clean, organized package. No guessing. No hunting for the \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eright\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e seals or filters. Just the confidence that comes with using parts engineered specifically for your engine. When you fire up the outboard after the service, you’ll hear that smooth, steady hum you’ve always trusted—and know it’s ready for another season of early mornings and long days on the water.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eKey Features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eComplete 300-hour service kit for select Mercury FourStroke outboards.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eIncludes fuel filter, thermostat \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eand\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e gaskets, oil drain seal, gearcase seals, spark plugs, water pump impeller kit, and unit anode.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eDesigned to meet strict Mercury Marine engineering standards.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eHigh-pleat fuel and oil filters for superior contaminant capture.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eHeavy-duty electroplated housings for excellent corrosion resistance.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePairs seamlessly with Mercury Marine Engine Oil and Premium Gear Lube (sold separately).\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFits Mercury 8–9.9hp FourStroke carbureted and EFI outboards.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCompatible with engines from serial number 0R042475 through 1R279944.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIdeal for inflatable boats, tiller-steer skiffs, jon boats, dinghies, pontoons, and kicker installations on larger fishing boats.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eSu\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eitable for use in both freshwater and coastal environments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eA proper 300-hour service can completely change how your outboard feels. Fresh spark plugs help the engine light off with less effort, especially on chilly mornings. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eA new fuel filter keeps contaminants from \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003esneaking into\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e the system, \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ewhich means\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e smoother throttle transitions and \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003emore\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e predictable idle.\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Th\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ee impeller kit restores reliable cooling, giving you steady temperature control when you’re running hard against wind or tide.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eReplacing seals and the thermostat helps tighten everything up—no small leaks, no wavering temperatures, no guessing. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eYou’ll feel the difference in how the engine responds: the idle settles down, acceleration becomes smoother, and the overall operation \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ejust\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e feels more secure and dialed-in.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIt’s the kind of maintenance that pays you back immediately and continues paying off every time you push away from the dock.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhy Buy OEM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eGenuine Mercury parts \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eguarantee\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e perfect \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003efitment\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e and long-term durability.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eComponents are engineered specifically for your 8–9.9hp FourStroke platform.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eSuperior filtration and sealing compared to typical aftermarket kits.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEnsures your outboard maintains Mercury’s performance standards.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOne dependable package—no mismatched parts or missing pieces.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eAsk any seasoned boater: when it comes to maintenance, cutting corners never pays off. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOEM parts \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003esimply\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e last longer and keep your engine running like it should.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFAQ\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ1: Which engines does part number 8M0120837 fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThis kit fits Mercury 8–9.9hp FourStroke carbureted and EFI outboards \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ein the\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e 0R042475–1R279944 \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eserial range\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: What makes this different from an aftermarket kit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It includes components engineered to Mercury Marine standards, with higher-quality filtration, seals, and materials.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How do I know if this is the correct kit for my outboard?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Verify your engine’s serial number and confirm it falls within the supported range.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Is this kit suitable for saltwater use?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes—every component is designed to withstand harsh marine environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is the 300-hour service manageable for most boat owners?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIf\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e you’re comfortable with routine outboard maintenance, yes. Otherwise, any Mercury-certified technician can complete the service quickly.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935248273699,"sku":"8M0120837","price":184.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8M0120837_Main.jpg?v=1760631370"},{"product_id":"mercury-8-9-9-complete-300-hour-service-maintenance-kit-standard-gearcase-only-10w-30-8m0120837-s-n-0r042475-above","title":"Mercury 8\/9.9 Complete 300 Hour Service Maintenance Kit Standard Gearcase Only 10W-30 - 8M0120837 - S\/N 0R042475 \u0026 Above","description":"\u003cp\u003eWant to know more about how your engine is breaking-in or wearing? Curious about whether or not your oil is doing its job? Want to be ahead of problems that may develop? PartsVu has partnered with Blackstone Laboratories and we are now offering professional\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e \u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eoil analysis kits\u003c\/a\u003e.\u003c\/span\u003e Results are typically received in a few days via email. \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eShop now\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eMercury | 300 Hour Service Kit | 8M0120837\u003c\/h2\u003e\n\u003cp\u003eKeep your small-horsepower Mercury running strong with a complete 300 hour service kit designed for 8 HP and 9.9 HP carbureted (209cc) four-stroke outboards equipped with \u003cstrong\u003estandard gearcases\u003c\/strong\u003e. Built around \u003cstrong\u003e10W-30 four-stroke oil\u003c\/strong\u003e, this kit includes the essential maintenance components commonly replaced at the 300 hour interval—covering lubrication, cooling, ignition, fuel filtration, and corrosion protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e8 HP Carb (209cc) – Serial 0R042475 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003e9.9 HP Carb (209cc) – Serial 0R042475 \u0026amp; up\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhat’s Included in This Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e 10W-30 Four-Stroke Engine Oil (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Gear Lube (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Fuel Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Oil Drain Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x\u003c\/strong\u003e Gearcase Drain Seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Thermostat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Thermostat Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x\u003c\/strong\u003e Spark Plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Water Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Anode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhy This 300 Hour Service Kit Matters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete milestone service:\u003c\/strong\u003e Covers oil, gearcase, cooling, ignition, and fuel filtration components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling system refresh:\u003c\/strong\u003e Impeller and thermostat replacement help maintain proper operating temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable starting and performance:\u003c\/strong\u003e Fresh spark plugs and fuel filter support clean combustion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion protection:\u003c\/strong\u003e New anode helps reduce galvanic corrosion in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit fit EFI models?\u003c\/strong\u003e\u003cbr\u003eNo. This kit is designed for carbureted 209cc 8 HP and 9.9 HP models only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are 2 gearcase drain seals included?\u003c\/strong\u003e\u003cbr\u003eMost gearcases use sealing washers at both the drain and vent screws. Replacing both helps ensure a proper seal after service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm compatibility?\u003c\/strong\u003e\u003cbr\u003eVerify your horsepower, engine type (carbureted 209cc), serial number range, and that your engine uses a standard gearcase before ordering.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":47125895872803,"sku":"PVM00086","price":223.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8m0120837-1030.jpg?v=1701377082"},{"product_id":"mercury-8-9-9-complete-300-hour-service-maintenance-kit-standard-gearcase-only-10w-30-synthetic-blend-8m0120837-s-n-0r042475-above","title":"Mercury 8\/9.9 Complete 300 Hour Service Maintenance Kit Standard Gearcase Only 10W-30 Synthetic Blend - 8M0120837 - S\/N 0R042475 \u0026 Above","description":"\u003cp\u003eWant to know more about how your engine is breaking-in or wearing? Curious about whether or not your oil is doing its job? Want to be ahead of problems that may develop? PartsVu has partnered with Blackstone Laboratories and we are now offering professional \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eoil analysis kits\u003c\/a\u003e.\u003c\/span\u003e Results are typically received in a few days via email. \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eShop now\u003c\/a\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003ch2\u003eMercury | 300 Hour Service Kit | 8M0120837\u003c\/h2\u003e\n\u003cp\u003eStay on schedule with a complete 300 hour service kit for Mercury 8 HP and 9.9 HP carbureted (209cc) four-stroke outboards equipped with \u003cstrong\u003estandard gearcases\u003c\/strong\u003e. Built around \u003cstrong\u003e10W-30 synthetic blend four-stroke oil\u003c\/strong\u003e, this kit includes the core service items plus the cooling, ignition, and sealing components commonly addressed at the 300 hour interval. It is a simple way to refresh critical systems and keep your small outboard starting easily and running reliably.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e8 HP Carb (209cc) – Serial 0R042475 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003e9.9 HP Carb (209cc) – Serial 0R042475 \u0026amp; up\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhat’s Included in This Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e 10W-30 Synthetic Blend Four-Stroke Engine Oil (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Gear Lube (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Fuel Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Oil Drain Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x\u003c\/strong\u003e Gearcase Drain Seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Thermostat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Thermostat Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x\u003c\/strong\u003e Spark Plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Water Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Anode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhy This 300 Hour Service Kit Matters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilestone service coverage:\u003c\/strong\u003e Combines fluids, filters, seals, and wear items in one kit so nothing gets missed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling system refresh:\u003c\/strong\u003e Thermostat and impeller service helps support proper water flow and stable operating temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable running:\u003c\/strong\u003e New spark plugs and fuel filtration support clean combustion and dependable starting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion protection:\u003c\/strong\u003e Includes an anode to help reduce galvanic corrosion in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit fit EFI models?\u003c\/strong\u003e\u003cbr\u003eNo. This kit is intended for carbureted 209cc 8 HP and 9.9 HP four-stroke models only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are 2 gearcase drain seals included?\u003c\/strong\u003e\u003cbr\u003eMost gearcases use sealing washers at both the drain and vent screws. Replacing both helps ensure a proper seal after service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this kit matches my outboard?\u003c\/strong\u003e\u003cbr\u003eVerify your engine is an 8 HP or 9.9 HP carbureted (209cc) model, falls within the listed serial range, and uses a standard gearcase before ordering.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":47125895905571,"sku":"PVM00087","price":226.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8m0120837_1030.jpg?v=1701377082"},{"product_id":"mercury-8-9-9-complete-300-hour-service-maintenance-kit-standard-gearcase-only-25w-40-8m0120837-s-n-0r042475-above","title":"Mercury 8\/9.9 Complete 300 Hour Service Maintenance Kit Standard Gearcase Only 25W-40 - 8M0120837 - S\/N 0R042475 \u0026 Above","description":"\u003cp\u003eWant to know more about how your engine is breaking-in or wearing? Curious about whether or not your oil is doing its job? Want to be ahead of problems that may develop? PartsVu has partnered with Blackstone Laboratories and we are now offering professional \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eoil analysis kits\u003c\/a\u003e.\u003c\/span\u003e Results are typically received in a few days via email. \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eShop now\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eMercury | 300 Hour Service Kit | 8M0120837\u003c\/h2\u003e\n\u003cp\u003eStay on schedule with a complete 300 hour service kit for Mercury 8 HP and 9.9 HP carbureted (209cc) four-stroke outboards equipped with \u003cstrong\u003estandard gearcases\u003c\/strong\u003e. Built around \u003cstrong\u003e25W-40 four-stroke oil\u003c\/strong\u003e, this kit includes the core service items plus the cooling, ignition, and sealing components commonly addressed at the 300 hour interval. It is a simple way to refresh critical systems and keep your small outboard starting easily and running reliably.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e8 HP Carb (209cc) – Serial 0R042475 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003e9.9 HP Carb (209cc) – Serial 0R042475 \u0026amp; up\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhat’s Included in This Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e 25W-40 Four-Stroke Engine Oil (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Gear Lube (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Fuel Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Oil Drain Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x\u003c\/strong\u003e Gearcase Drain Seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Thermostat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Thermostat Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x\u003c\/strong\u003e Spark Plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Water Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Anode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhy This 300 Hour Service Kit Matters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilestone service coverage:\u003c\/strong\u003e Combines fluids, filters, seals, and wear items in one kit so nothing gets missed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling system refresh:\u003c\/strong\u003e Thermostat and impeller service helps support proper water flow and stable operating temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable running:\u003c\/strong\u003e New spark plugs and fuel filtration support clean combustion and dependable starting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion protection:\u003c\/strong\u003e Includes an anode to help reduce galvanic corrosion in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit fit EFI models?\u003c\/strong\u003e\u003cbr\u003eNo. This kit is intended for carbureted 209cc 8 HP and 9.9 HP four-stroke models only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are 2 gearcase drain seals included?\u003c\/strong\u003e\u003cbr\u003eMost gearcases use sealing washers at both the drain and vent screws. Replacing both helps ensure a proper seal after service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this kit matches my outboard?\u003c\/strong\u003e\u003cbr\u003eVerify your engine is an 8 HP or 9.9 HP carbureted (209cc) model, falls within the listed serial range, and uses a standard gearcase before ordering.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":47125895938339,"sku":"PVM00088","price":223.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8m0120837-2540.jpg?v=1701377082"},{"product_id":"mercury-8-9-9-complete-300-hour-service-maintenance-kit-standard-gearcase-only-25w-40-synthetic-blend-8m0120837-s-n-0r042475-above","title":"Mercury 8\/9.9 Complete 300 Hour Service Maintenance Kit Standard Gearcase Only 25W-40 Synthetic Blend - 8M0120837 - S\/N 0R042475 \u0026 Above","description":"\u003cp\u003eWant to know more about how your engine is breaking-in or wearing? Curious about whether or not your oil is doing its job? Want to be ahead of problems that may develop? PartsVu has partnered with Blackstone Laboratories and we are now offering professional \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eoil analysis kits\u003c\/a\u003e\u003c\/span\u003e. Results are typically received in a few days via email. \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eShop now\u003c\/a\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003ch2\u003eMercury | 300 Hour Service Kit | 8M0120837\u003c\/h2\u003e\n\u003cp\u003eStay on schedule with a complete 300 hour service kit for Mercury 8 HP and 9.9 HP carbureted (209cc) four-stroke outboards equipped with \u003cstrong\u003estandard gearcases\u003c\/strong\u003e. Built around \u003cstrong\u003e25W-40 synthetic blend four-stroke oil\u003c\/strong\u003e, this kit includes the core service items plus the cooling, ignition, and sealing components commonly addressed at the 300 hour interval. It is a simple way to refresh critical systems and keep your small outboard starting easily and running reliably.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e8 HP Carb (209cc) – Serial 0R042475 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003e9.9 HP Carb (209cc) – Serial 0R042475 \u0026amp; up\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhat’s Included in This Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e 25W-40 Synthetic Blend Four-Stroke Engine Oil (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Gear Lube (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Fuel Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Oil Drain Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x\u003c\/strong\u003e Gearcase Drain Seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Thermostat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Thermostat Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x\u003c\/strong\u003e Spark Plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Water Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Anode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhy This 300 Hour Service Kit Matters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilestone service coverage:\u003c\/strong\u003e Combines fluids, filter, seals, and wear items in one kit so nothing gets missed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling system refresh:\u003c\/strong\u003e Thermostat and impeller service helps support proper water flow and stable operating temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable running:\u003c\/strong\u003e New spark plugs and fuel filtration support clean combustion and dependable starting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion protection:\u003c\/strong\u003e Includes an anode to help reduce galvanic corrosion in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit fit EFI models?\u003c\/strong\u003e\u003cbr\u003eNo. This kit is intended for carbureted 209cc 8 HP and 9.9 HP four-stroke models only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are 2 gearcase drain seals included?\u003c\/strong\u003e\u003cbr\u003eMost gearcases use sealing washers at both the drain and vent screws. Replacing both helps ensure a proper seal after service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this kit matches my outboard?\u003c\/strong\u003e\u003cbr\u003eVerify your engine is an 8 HP or 9.9 HP carbureted (209cc) model, falls within the listed serial range, and uses a standard gearcase before ordering.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":47125895971107,"sku":"PVM00089","price":226.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8m0120837_2540.jpg?v=1701377082"},{"product_id":"mercury-8-9-9-hp-complete-300-hour-service-maintenance-kit-10w-30-command-thrust-bigfoot-only-8m0120867-s-n-0r042475-above","title":"Mercury 8\/9.9 HP Complete 300 Hour Service Maintenance Kit 10W-30 Command Thrust\/Bigfoot Only 8M0120867 - S\/N 0R042475 \u0026 Above","description":"\u003cp\u003eWant to know more about how your engine is breaking-in or wearing? Curious about whether or not your oil is doing its job? Want to be ahead of problems that may develop? PartsVu has partnered with Blackstone Laboratories and we are now offering professional \u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\"\u003eoil analysis kits\u003c\/a\u003e. Results are typically received in a few days via email. \u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\"\u003eShop now\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eMercury | 300 Hour Service Kit | 8M0120867\u003c\/h2\u003e\n\u003cp\u003eStay on schedule with a complete 300 hour service kit for Mercury 8 HP and 9.9 HP carbureted (209cc) four-stroke outboards equipped with \u003cstrong\u003eCommand Thrust\/Bigfoot gearcases\u003c\/strong\u003e. Built around \u003cstrong\u003e10W-30 four-stroke oil\u003c\/strong\u003e, this kit includes the core service items plus the cooling, ignition, and sealing components commonly addressed at the 300 hour interval. It is a simple way to refresh critical systems and keep your small outboard starting easily and running reliably.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSerial number range:\u003c\/strong\u003e 0R042475 \u0026amp; Above\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Mercury 8\/9.9 HP – Command Thrust\/Bigfoot Gearcases Only\u003c\/p\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhat’s Included in This Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e 10W-30 Four-Stroke Engine Oil (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Gear Lube (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Fuel Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Oil Drain Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x\u003c\/strong\u003e Gearcase Drain Seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Thermostat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Thermostat Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x\u003c\/strong\u003e Spark Plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Water Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x\u003c\/strong\u003e Anode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhy This 300 Hour Service Kit Matters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilestone service coverage:\u003c\/strong\u003e Combines fluids, filter, seals, and wear items in one kit so nothing gets missed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling system refresh:\u003c\/strong\u003e Thermostat and impeller service helps support proper water flow and stable operating temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable running:\u003c\/strong\u003e New spark plugs and fuel filtration support clean combustion and dependable starting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion protection:\u003c\/strong\u003e Includes an anode to help reduce galvanic corrosion in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit fit standard gearcase models?\u003c\/strong\u003e\u003cbr\u003eNo. This kit is intended for \u003cstrong\u003eCommand Thrust\/Bigfoot gearcases only\u003c\/strong\u003e. Standard gearcase models use a different kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are 2 gearcase drain seals included?\u003c\/strong\u003e\u003cbr\u003eMost gearcases use sealing washers at both the drain and vent screws. Replacing both helps ensure a proper seal after service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this kit matches my outboard?\u003c\/strong\u003e\u003cbr\u003eVerify your engine is an 8 HP or 9.9 HP carbureted (209cc) model, falls within the listed serial range, and uses a Command Thrust\/Bigfoot gearcase before ordering.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":47125896003875,"sku":"PVM00090","price":234.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8m0120867-1030.jpg?v=1701377082"},{"product_id":"mercury-8-9-9-hp-complete-300-hour-service-maintenance-kit-10w-30-synthetic-blend-command-thrust-bigfoot-only-8m0120867-s-n-0r042475-above","title":"Mercury 8\/9.9 HP Complete 300 Hour Service Maintenance Kit 10W-30 Synthetic Blend Command Thrust\/Bigfoot Only 8M0120867 - S\/N 0R042475 \u0026 Above","description":"\u003cp\u003eWant to know more about how your engine is breaking-in or wearing? Curious about whether or not your oil is doing its job? Want to be ahead of problems that may develop? PartsVu has partnered with Blackstone Laboratories and we are now offering professional \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eoil analysis kits\u003c\/a\u003e.\u003c\/span\u003e Results are typically received in a few days via email. \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eShop now\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eMercury | 300 Hour Service Kit | 8M0120867\u003c\/h2\u003e\n\u003cp\u003eStay on schedule with a complete 300 hour service kit for Mercury 8 HP and 9.9 HP carbureted (209cc) four-stroke outboards equipped with \u003cstrong\u003eCommand Thrust\/Bigfoot gearcases\u003c\/strong\u003e. Built around \u003cstrong\u003e10W-30 synthetic blend four-stroke oil\u003c\/strong\u003e, this bundle covers the most common milestone service items—engine oil and sealing, gearcase service parts, fuel filtration, cooling components, ignition parts, and corrosion protection—so you can keep your small outboard starting easily and running reliably.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSerial number range:\u003c\/strong\u003e 0R042475 \u0026amp; Above\u003c\/p\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhat’s Included in This Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e 10W-30 Synthetic Blend Four-Stroke Engine Oil (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Gear Lube (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Fuel Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Oil Drain Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 x\u003c\/strong\u003e Gearcase Drain Seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Thermostat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Thermostat Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 x\u003c\/strong\u003e Spark Plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Water Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Anode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhy This Kit Makes Service Easier\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilestone coverage:\u003c\/strong\u003e Combines fluids, seals, filters, cooling parts, and ignition items in one kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling system refresh:\u003c\/strong\u003e Thermostat and impeller service helps maintain proper water flow and stable operating temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel-side protection:\u003c\/strong\u003e Fresh fuel filtration helps keep debris and contamination away from critical components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion defense:\u003c\/strong\u003e Includes an anode to help reduce galvanic corrosion in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eService Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for Mercury 8\/9.9 HP models with Command Thrust\/Bigfoot gearcases only.\u003c\/li\u003e\n\u003cli\u003eReplace drain seals during every service to help maintain a proper seal.\u003c\/li\u003e\n\u003cli\u003eDispose of used oil and gear lube according to local regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit fit standard gearcase models?\u003c\/strong\u003e\u003cbr\u003eNo. This kit is intended for \u003cstrong\u003eCommand Thrust\/Bigfoot gearcases only\u003c\/strong\u003e. Standard gearcase models use a different kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are 2 gearcase drain seals included?\u003c\/strong\u003e\u003cbr\u003eMany gearcases use sealing washers at both the drain and vent screws, so replacing them together helps support a proper seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this kit matches my outboard?\u003c\/strong\u003e\u003cbr\u003eVerify your engine serial number is \u003cstrong\u003e0R042475 and above\u003c\/strong\u003e and that your outboard is equipped with a Command Thrust\/Bigfoot gearcase.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":47125896036643,"sku":"PVM00091","price":237.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8m0120867_1030.jpg?v=1701377083"},{"product_id":"mercury-8-9-9-hp-complete-300-hour-service-maintenance-kit-25w-40-command-thrust-bigfoot-only-8m0120867-s-n-0r042475-above","title":"Mercury 8\/9.9 HP Complete 300 Hour Service Maintenance Kit 25W-40 Command Thrust\/Bigfoot Only 8M0120867 - S\/N 0R042475 \u0026 Above","description":"\u003cp\u003eWant to know more about how your engine is breaking-in or wearing? Curious about whether or not your oil is doing its job? Want to be ahead of problems that may develop? PartsVu has partnered with Blackstone Laboratories and we are now offering professional \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eoil analysis kits\u003c\/a\u003e\u003c\/span\u003e. Results are typically received in a few days via email. \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\" style=\"color: rgb(43, 0, 255);\"\u003eShop now\u003c\/a\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003ch2\u003eMercury | 300 Hour Service Kit | 8M0120867\u003c\/h2\u003e\n\u003cp\u003eStay on schedule with a complete 300 hour service kit for Mercury 8 HP and 9.9 HP carbureted (209cc) four-stroke outboards equipped with \u003cstrong\u003eCommand Thrust\/Bigfoot gearcases\u003c\/strong\u003e. Built around \u003cstrong\u003e25W-40 four-stroke engine oil\u003c\/strong\u003e, this bundle covers the most common milestone service items—engine lubrication, gearcase service parts, fuel filtration, cooling components, ignition parts, and corrosion protection—so you can keep your small outboard performing reliably season after season.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSerial number range:\u003c\/strong\u003e 0R042475 \u0026amp; Above\u003c\/p\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhat’s Included in This Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e 25W-40 Four-Stroke Engine Oil (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Gear Lube (Quart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Fuel Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Oil Drain Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 x\u003c\/strong\u003e Gearcase Drain Seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Thermostat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Thermostat Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 x\u003c\/strong\u003e Spark Plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Water Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Anode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eWhy This Kit Makes Service Easier\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilestone coverage:\u003c\/strong\u003e Combines fluids, seals, filters, cooling parts, and ignition components in one kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling system refresh:\u003c\/strong\u003e Thermostat and impeller service helps maintain proper water flow and stable operating temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel-side protection:\u003c\/strong\u003e Replacing the fuel filter helps reduce debris and contamination reaching critical components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion defense:\u003c\/strong\u003e Includes an anode to help reduce galvanic corrosion in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eService Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned specifically for Mercury 8\/9.9 HP models with Command Thrust\/Bigfoot gearcases.\u003c\/li\u003e\n\u003cli\u003eReplace drain seals during every service to help maintain a proper seal.\u003c\/li\u003e\n\u003cli\u003eDispose of used oil and gear lube according to local regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 24px 0;\"\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit fit standard gearcase models?\u003c\/strong\u003e\u003cbr\u003eNo. This kit is intended for \u003cstrong\u003eCommand Thrust\/Bigfoot gearcases only\u003c\/strong\u003e. Standard gearcase models require a different service kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are 2 gearcase drain seals included?\u003c\/strong\u003e\u003cbr\u003eMany gearcases use sealing washers at both the drain and vent screws, so replacing both helps ensure a proper seal after service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm compatibility?\u003c\/strong\u003e\u003cbr\u003eVerify your engine serial number is \u003cstrong\u003e0R042475 or higher\u003c\/strong\u003e and confirm your outboard is equipped with a Command Thrust\/Bigfoot gearcase before ordering.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":47125896069411,"sku":"PVM00092","price":234.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8m0120867-2540.jpg?v=1701377082"},{"product_id":"mercury-8-9-9-hp-complete-300-hour-service-maintenance-kit-25w-40-synthetic-blend-command-thrust-bigfoot-only-8m0120867-s-n-0r042475-above","title":"Mercury 8\/9.9 HP Complete 300 Hour Service Maintenance Kit 25W-40 Synthetic Blend Command Thrust\/Bigfoot Only 8M0120867 - S\/N 0R042475 \u0026 Above","description":"\u003cp\u003eWant to know more about how your engine is breaking-in or wearing? Curious about whether or not your oil is doing its job? Want to be ahead of problems that may develop? PartsVu has partnered with Blackstone Laboratories and we are now offering professional \u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\"\u003eoil analysis kits\u003c\/a\u003e. Results are typically received in a few days via email. \u003ca href=\"https:\/\/partsvu.com\/collections\/blackstone-laboratories\"\u003eShop now\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eMercury | 300 Hour Service Kit | 8\/9.9 HP Command Thrust \/ Bigfoot | 8M0120867\u003c\/h2\u003e\n\n\u003cp\u003eKeep your Mercury 8HP or 9.9HP Command Thrust (Bigfoot) outboard running strong with this complete \u003cstrong\u003e300 Hour Service Kit – 8M0120867\u003c\/strong\u003e. Designed for engines with serial numbers \u003cstrong\u003e0R042475 and above\u003c\/strong\u003e, this kit includes the core maintenance components required at the 300-hour service interval to support performance, reliability, and long engine life.\u003c\/p\u003e\n\n\u003cp\u003eAt 300 hours, your outboard benefits from fresh lubrication, cooling system inspection, ignition refresh, and updated sealing components. This kit bundles everything together so you can complete the service efficiently without tracking down individual parts.\u003c\/p\u003e\n\n\u003chr style=\"margin:24px 0;\"\u003e\n\n\u003ch3\u003eWhat’s Included in This Kit\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Quart of 25W-40 Synthetic Blend Engine Oil\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Quart of Mercury Gear Lube\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Fuel Filter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Oil Drain Seal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2 x\u003c\/strong\u003e Gearcase Drain Seals\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Thermostat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Thermostat Gasket\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2 x\u003c\/strong\u003e Spark Plugs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Water Pump Impeller Kit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x\u003c\/strong\u003e Anode\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"margin:24px 0;\"\u003e\n\n\u003ch3\u003eWhy the 300 Hour Service Matters\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLubrication refresh:\u003c\/strong\u003e Replacing engine oil and gear lube helps maintain proper internal protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCooling system maintenance:\u003c\/strong\u003e A new thermostat and impeller kit support consistent operating temperature.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIgnition reliability:\u003c\/strong\u003e Fresh spark plugs help ensure clean starts and efficient combustion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrosion protection:\u003c\/strong\u003e Replacing the anode helps defend internal components from galvanic corrosion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeak prevention:\u003c\/strong\u003e New drain seals support proper sealing after service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"margin:24px 0;\"\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMercury 8 HP Command Thrust (Bigfoot)\u003c\/li\u003e\n  \u003cli\u003eMercury 9.9 HP Command Thrust (Bigfoot)\u003c\/li\u003e\n  \u003cli\u003eSerial Numbers \u003cstrong\u003e0R042475 \u0026amp; Above\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis kit is engineered specifically for Bigfoot \/ Command Thrust gearcases. Always verify your serial number before ordering to ensure correct fitment.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":47125896102179,"sku":"PVM00093","price":237.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8m0120867_2540.jpg?v=1701377083"},{"product_id":"blackstone-laboratories-oil-analysis-kit-engine-or-transmission-oil-testing-4-pack","title":"Blackstone Laboratories Oil Analysis Kit - Engine or Transmission Oil Testing - 4-pack","description":"\u003cp\u003ePartsVu has partnered with Blackstone Labratories to give you the opportunity to know exactly how your engine, transmission, gear set, or generator is performing right now, through oil analysis. \u003c\/p\u003e\n\u003cp\u003eYou will receive everything you need to ship an oil sample to the professionals at Blackstone. The lab report will indicate if oil change intervals are on time, if there are contaminants like water, coolant, or salt present, and analyze a full spectrum of metals that might identify premature engine wear before it results in a costly or dangerous failure.\u003c\/p\u003e\n\u003cp\u003eThese oil sample kits can be used with inboard, outboard, gas, and diesel engines. The kits come complete with the following:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSample Bottle\u003c\/li\u003e\n\u003cli\u003ePlastic Bag \u0026amp; Absorbent Mat\u003c\/li\u003e\n\u003cli\u003eExternal Contaminent Bottle\u003c\/li\u003e\n\u003cli\u003ePrepaid Shipping Label to send the oil sample back to Blackstone Labs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSimply collect a small sample, fill out the sample card and drop the kit in the mailbox. Once Blackstone receives the oil sample, in a few days you will receive an email with the test results and a simplified breakdown of what the results mean. \u003c\/p\u003e\n\u003cp\u003eBlackstone will archive your sample and it can be used for future testing to further determine how your boat is performing over time.\u003c\/p\u003e\n\u003cp\u003eBelow is a sample report:\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.partsvu.com\/pub\/media\/wysiwyg\/BlackstoneLabSample1_2.jpg\"\u003e\u003c\/p\u003e","brand":"PartsVu","offers":[{"title":"Default Title","offer_id":48330423107875,"sku":"PVA00002","price":140.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/blackstone_4pack1_1.jpg?v=1714497760"},{"product_id":"mercury-outboard-winterizing-kit","title":"Mercury Outboard Winterizing Kit","description":"\u003ch2\u003eMercury Outboard Winterizing Kit\u003c\/h2\u003e\n\u003cp\u003ePreparing your Mercury outboard for winter storage doesn’t have to be stressful. The Mercury Outboard Winterizing Kit includes the exact OEM products designed to keep your engine protected during the off-season. To ensure your outboard starts strong next season, it’s essential to address several key components. This includes stabilizing your fuel, coating internal parts, and lubricating high-wear areas. The kit provides flexible size options for fuel stabilizer and grease, and you can also choose to add dielectric grease for enhanced electrical protection. For a full walkthrough of the process, check out our \u003ca href=\"https:\/\/partsvu.com\/blogs\/boating-resources\/winterizing-outboard-motor-mercury-marine-essential-maintenance\" target=\"_blank\"\u003eMercury Winterizing Guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Stabilizer – Keeps gas fresh\u003c\/strong\u003e – \u003ca href=\"https:\/\/partsvu.com\/products\/mercury-quickstor-fuel-stabilizer-12-oz-92-8m0047932\" target=\"_blank\"\u003eMercury Quickstor Fuel Stabilizer – 12 oz.\u003c\/a\u003e or \u003ca href=\"https:\/\/partsvu.com\/products\/mercury-quickstor-fuel-stabilizer-32-oz-92-8m0058692\" target=\"_blank\"\u003e32 oz.\u003c\/a\u003e. Prevents phase separation, fights varnish deposits, and helps your engine start easily after months of storage. Perfect for both small tanks and larger multi-tank setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFogging Oil – Protects internal parts\u003c\/strong\u003e – \u003ca href=\"https:\/\/partsvu.com\/products\/mercury-storage-seal-fogging-oil-12-oz-92-858081k03\" target=\"_blank\"\u003eMercury Storage Seal Fogging Oil – 12 oz.\u003c\/a\u003e. Coats cylinders and injectors with a corrosion-resistant film to block moisture intrusion and keep metal surfaces from pitting. Essential for long-term engine protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrease – Fights wear and corrosion\u003c\/strong\u003e – \u003ca href=\"https:\/\/partsvu.com\/collections\/mercury-quicksilver-corrosion-inhibitors-grease\/products\/mercury-2-4-c-marine-grease-with-ptfe-8-oz-92-802859a1\" target=\"_blank\"\u003eMercury 2-4-C Marine Grease – 8 oz.\u003c\/a\u003e or \u003ca rel=\"noopener\" href=\"https:\/\/partsvu.com\/products\/mercury-greasex-14oz-92-8m0190472\" target=\"_blank\"\u003e14 oz. cartridge\u003c\/a\u003e. Specially formulated with PTFE to provide long-lasting lubrication for prop shafts, steering linkages, and fittings. Protects against saltwater intrusion and seizing.\u003c\/li\u003e\n\u003cli\u003eDielectric Grease (Optional) – Safeguards connections – \u003ca href=\"https:\/\/partsvu.com\/products\/permatex-dielectric-tune-up-grease-33-oz-81150\" target=\"_blank\"\u003ePermatex Dielectric Tune-Up Grease – .33 oz.\u003c\/a\u003e. A simple but effective way to keep plugs and terminals free of moisture and corrosion, reducing electrical issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-approved products\u003c\/strong\u003e – Every item in this kit is Mercury-tested and formulated for outboard use, ensuring the right chemistry for your engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexibility in size\u003c\/strong\u003e – Choose the bottle or cartridge size that best fits your outboard and fuel system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplifies maintenance\u003c\/strong\u003e – Rather than sourcing items separately, this kit bundles together everything Mercury recommends for proper winterization.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine longevity\u003c\/strong\u003e – Using these products as directed reduces risk of costly repairs, extends engine life, and ensures smoother performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted by professionals\u003c\/strong\u003e – The same products marine techs rely on for seasonal prep, now packaged for DIY boaters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eStoring your boat for the off-season is about prevention. With the Mercury Outboard Winterizing Kit, you effectively protect every essential system — fuel, internal components, moving parts, and electrical systems. It's a wise investment that ensures your outboard remains reliable, efficient, and ready for spring launch.\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this kit compatible with outboards that are not made by Mercury?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: While designed for Mercury, the stabilizer, fogging oil, and grease are high-quality marine-grade products that can be used across most brands. For best results, stick with OEM for your engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need the larger sizes of stabilizer or grease?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Not necessarily. The 32 oz. stabilizer and 14 oz. grease cartridge are best for larger tanks or frequent service work. When it comes to single-outboard setups, smaller sizes often do the trick! They pack a punch while keeping things sleek and efficient.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is winterization really necessary if I only store my boat for a couple of months?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. Even short storage periods can lead to stale fuel, internal corrosion, and seized fittings. A proper winterization routine ensures your engine is protected regardless of downtime.\u003c\/p\u003e","brand":"PartsVu","offers":[{"title":"12 oz. \/ 12 oz. \/ 8 oz. Mercury Grease","offer_id":54304344834339,"sku":"C-PVMP-05442","price":43.97,"currency_code":"USD","in_stock":true},{"title":"12 oz. \/ 12 oz. \/ 8 oz. Mercury Grease + Dielectric Grease (Optional)","offer_id":54304344867107,"sku":"C-PVMP-05443","price":51.09,"currency_code":"USD","in_stock":true},{"title":"12 oz. \/ 12 oz. \/ 14 oz. Mercury Grease","offer_id":54304344899875,"sku":"C-PVMP-05444","price":46.97,"currency_code":"USD","in_stock":true},{"title":"12 oz. \/ 12 oz. \/ 14 oz. Mercury Grease + Dielectric Grease (Optional)","offer_id":54304344932643,"sku":"C-PVMP-05445","price":54.09,"currency_code":"USD","in_stock":true},{"title":"32 oz. \/ 12 oz. \/ 8 oz. Mercury Grease","offer_id":54304344965411,"sku":"C-PVMP-05446","price":55.56,"currency_code":"USD","in_stock":true},{"title":"32 oz. \/ 12 oz. \/ 8 oz. Mercury Grease + Dielectric Grease (Optional)","offer_id":54304344998179,"sku":"C-PVMP-05447","price":62.68,"currency_code":"USD","in_stock":true},{"title":"32 oz. \/ 12 oz. \/ 14 oz. Mercury Grease","offer_id":54304345030947,"sku":"C-PVMP-05448","price":58.56,"currency_code":"USD","in_stock":true},{"title":"32 oz. \/ 12 oz. \/ 14 oz. Mercury Grease + Dielectric Grease (Optional)","offer_id":54304345063715,"sku":"C-PVMP-05449","price":65.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/C-PVMP-05442.jpg?v=1756846488"}],"url":"https:\/\/partsvu.com\/en-au\/collections\/mercury-8-9-9-300-hour-kits.oembed","provider":"PartsVu","version":"1.0","type":"link"}