{"title":"4.3L MerCruiser 100 \u0026 300 Hour Service Kits","description":"\u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eWhat’s Included in the 4.3L MerCruiser Service Kits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e100-Hour Service Kit typically includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eOil filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFuel filters\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eGear case drain seals\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eSpark plugs\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e300-Hour Service Kit includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAll items from the 100-hour kit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eThermostat and gasket\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eV-belts\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThese kits are designed to simplify regular maintenance, ensuring you always have the correct OEM parts for your 4.3L MerCruiser.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003ePricing \u0026amp; Value\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePrices for the 4.3L MerCruiser service kits vary depending on current availability and promotions. In general:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eThe \u003c\/span\u003e\u003cspan\u003e100-hour kit\u003c\/span\u003e\u003cspan\u003e is more affordable, covering routine service needs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eThe \u003c\/span\u003e\u003cspan\u003e300-hour kit\u003c\/span\u003e\u003cspan\u003e provides additional parts for extended service intervals.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePurchasing as a kit is usually \u003c\/span\u003e\u003cspan\u003emore cost-effective\u003c\/span\u003e\u003cspan\u003e than buying each part individually.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eComparison Table: 100-Hour vs. 300-Hour Kit\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv dir=\"ltr\" align=\"center\"\u003e\n\u003ctable\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"160\"\u003e\n\u003ccol width=\"107\"\u003e\n\u003ccol width=\"107\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFeature \/ Component\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e100-Hour Kit\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e300-Hour Kit\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOil Filter\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✅\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✅\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFuel Filters\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✅\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✅\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eGear Case Drain Seals\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✅\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✅\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSpark Plugs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✅\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✅\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThermostat \u0026amp; Gasket\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e❌\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✅\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eV-Belts\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e❌\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✅\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eWhy Buy from PartsVu?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eGenuine OEM parts\u003c\/span\u003e\u003cspan\u003e – direct from Mercury, built for your 4.3L MerCruiser.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eFast shipping \u0026amp; easy returns\u003c\/span\u003e\u003cspan\u003e – service kits are shipped quickly and backed by hassle-free returns.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eExpert resources\u003c\/span\u003e\u003cspan\u003e – access maintenance charts, service schedules, and product schematics for guidance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003e4.3L MerCruiser Maintenance Kits FAQs\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003eWhat is included in the 4.3L MerCruiser 100-hour and 300-hour service kits?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 100-hour kit typically contains an oil filter, fuel filters, gear case drain seals, and spark plugs. The 300-hour kit includes those items plus a thermostat, gasket, and V-belts.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003eHow much do the service kits cost?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePrices vary depending on the kit and current promotions. Purchasing a complete kit is often more cost-effective than buying each part individually.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003eHow do I buy 4.3L MerCruiser service kits from PartsVu?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSelect the correct kit from this page and add it to your cart. All orders qualify for PartsVu’s fast shipping and may earn free shipping if over $99.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003eWhat are the risks of skipping 100-hour or 300-hour service intervals?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eDelaying service can lead to reduced performance, higher fuel consumption, and premature wear of critical engine parts — ultimately increasing long-term repair costs.\u003c\/span\u003e\u003c\/p\u003e","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-4-3l-mpi-bravo-rwc-mercruiser-300-hour-service-kit-8m0147065-2002-current","title":"Mercury – 300 Hour Maintenance Kit | MerCruiser 4.3L MPI Bravo Series | OEM Service Components | 8M0147065","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – 300 Hour Maintenance Kit | MerCruiser 4.3L MPI Bravo Series | OEM Service Components | 8M0147065\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 something steadying about knowing your engine is truly prepared for the long haul. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhen you run a MerCruiser 4.3L MPI paired with a Bravo sterndrive, you expect smooth pull, dependable cooling, and a throttle response that feels clean and confident every time you ease forward. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury 8M0147065 300 Hour Maintenance Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e brings that reassurance back into your routine. It’s the kit seasoned boaters keep on hand because it bundles everything you need for a major service interval—no scrambling, no guesswork, just genuine Mercury components built to protect your investment.\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\n\u003cspan data-preserver-spaces=\"true\"\u003eComplete \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e300-hour service kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e for 4.3L MPI Bravo sterndrive engines\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eIncludes \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eoil filter, fuel filter, spark plugs, thermostat, thermostat gasket, serpentine belt, gearcase drain seals, IAC air filter, and seawater pump impeller kit\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eHigh-pleat, premium filtration components for maximum protection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eElectroplated housings and marine-rated materials for corrosion resistance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eAll parts engineered to \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury Marine OEM standards\u003c\/span\u003e\u003c\/strong\u003e\n\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\n\u003cspan data-preserver-spaces=\"true\"\u003eF\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eits \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMerCruiser 4.3L MPI engines\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e built by General Motors\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eDesigned for engines paired with \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eBravo sterndrives\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eCompatible with model years \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e2002 and newer\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eIdeal for \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003erunabouts\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003esport boats\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003efamily cruisers\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, and \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eweekend fishing vessels\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e relying on the 4.3L\/Bravo combination\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\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e 300-hour service is one of those milestones that separates “good enough” maintenance from the kind that keeps an engine running like new. This kit revives performance across the entire system. The new spark plugs restore crisp, confident ignition. A fresh serpentine belt means smoother accessory operation with less strain when you throttle up. The IAC air filter helps refine idle quality, making low-speed maneuvering more predictable and less choppy.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOne standout addition in this kit is the \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eseawater pump impeller\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, a critical piece for Bravo-driven boats. A strong impeller ensures steady cooling water flow—something you’ll feel in lower engine temps and reliable performance on long runs. The new fuel and oil filters eliminate debris and water, tightening up fuel delivery and protecting internal components from unnecessary wear.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEverything in this kit is chosen specifically for how the 4.3L MPI and Bravo system behaves under real-world use: heat, vibration, long hours, stop-and-go cruising, and even the hard pulls that come with tow sports. When you replace these parts as a set, you give your engine a clean slate—one you’ll feel the moment it comes back to life.\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\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThere’s value in knowing the parts you’re installing aren’t “close enough,” but correct in every dimension. Mercury’s OEM components are built for exact fit and tested under the same demands as factory engines. Tha\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003et means no premature wear, no questionable seals, and no surprises halfway through your boating season. Aftermarket kits often mix materials or cut corners on filtration, and that gamble rarely pays off over time. With OEM, you’re protecting your engine the way Mercury intended—reliably, consistently, and affordably in the long run.\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 \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003efits \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMerCruiser 4.3L MPI engines with Bravo sterndrives\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, model year 2002 and newer.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: What makes it better than aftermarket kits?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e OEM parts match Mercury’s exact engineering standards—better fit, better reliability, and proven 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?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e If your boat has a \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e4.3L MPI engine\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e paired with a \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eBravo sterndrive\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, this is the correct 300-hour service kit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Can it be used in freshwater and saltwater boats?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Absolutely. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eAll components are built to withstand harsh marine environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation easy?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Most owners familiar with routine maintenance find this kit straightforward. Every part replaces an existing component directly.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935187882275,"sku":"8M0147065","price":393.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8M0147065_Main-1.jpg?v=1760631428"},{"product_id":"mercury-4-3l-carb-alpha-rwc-without-remote-oil-mercruiser-300-hour-service-kit-8m0147063-1996-current","title":"Mercury – 300 Hour Maintenance Kit | MerCruiser 4.3L Carbureted Alpha Drive | OEM Service Components | 8M0147063","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – 300 Hour Maintenance Kit | MerCruiser 4.3L Carbureted Alpha Drive | OEM Service Components | 8M0147063\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\"\u003eIf you run a MerCruiser 4.3L carbureted engine, you know exactly what it feels like when that V6 is dialed in just right—smooth throttle, clean exhaust note, and the steady push that lets you relax into a long stretch of open water. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury 8M0147063 300 Hour Maintenance Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e is built for boaters who want to keep that feeling going. Everything in this kit supports the health, efficiency, and reliability of your engine and Alpha sterndrive system, giving you the peace of mind that only a proper, factory-spec service can offer. Whether you’re cruising a quiet lake or running a long coastal channel, this kit helps ensure your engine responds the way it should every time you turn the key.\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\n\u003cspan data-preserver-spaces=\"true\"\u003eComplete \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e300-hour service kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e for 4.3L carbureted MerCruiser engines\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eWorks with engines using \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003edirect-to-block oil filter mounting\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eAlpha sterndrive systems (1996 and newer)\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eIncludes \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eoil filter, fuel filter, gearcase drain seals, spark plugs, thermostat, thermostat gasket, and serpentine belt\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eHigh-pleat oil and fuel filters capture fine debris for cleaner lubrication and fuel delivery\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCorrosion-resistant housings and materials designed for harsh marine environments\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\n\u003cspan data-preserver-spaces=\"true\"\u003eFits \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMerCruiser 4.3L carbureted engines\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e made by General Motors\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eC\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eompatible with \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eAlpha sterndrives from 1996 and newer\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eSuitable for bowriders, cuddy cabins, runabouts, ski boats, and light cruisers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIdeal for both recreational and light commercial applications\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 proper 300-hour service is more than just a checklist—it’s a chance to restore the engine to its best self. Cl\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eean \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003espark plugs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e help bring back crisp starts and smooth acceleration. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003ethermostat and gasket\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e ensure stable temperature control, preventing the swings that can hurt performance over time. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eserpentine belt\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e refreshes accessory drive alignment, removing the wobble, slip, or squeal that often sneaks up after a few seasons.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eTh\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ee included \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eoil and fuel filters\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e play the biggest role in long-term health by keeping contaminants out of critical pathways. You’ll notice steadier idle, smoother transitions on and off plane, and more predictable throttle response. And with fresh \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003egearcase drain seals\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, you protect the sterndrive from water intrusion—one of the biggest threats to gear longevity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhen all these components work together, you get a more confident, more enjoyable ride. Everything feels tighter, cleaner, and more willing.\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\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury designs these kits around the exact specifications of each engine family. That means every part—every seal, filter, and belt—is built to the tolerances your engine was engineered for. Aftermarket substitutions might seem tempting, but they rarely match OEM quality, especially when exposed to saltwater or high-hour use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWith OEM parts, you’ll get better reliability, fewer surprises, and long-term protection for your investment. It’s the smart choice for boaters who would rather spend their weekends out on the water than dealing with unexpected repair bills.\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: W\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ehich 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 \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMerCruiser 4.3L carbureted engines (1996 and newer)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e with oil filters mounted directly to the block and Alpha sterndrives.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: What makes OEM better than aftermarket?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e OEM parts match exact engineering specs, ensuring proper filtration, durability, and fit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How can I confirm it’s the right kit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Ch\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eeck that your 4.3L carb engine uses a block-mounted oil filter and an Alpha sterndrive.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Can it be used in saltwater?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes—every component is designed for saltwater and freshwater environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation straightforward?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e If you’re comfortable with routine marine maintenance, this kit installs cleanly and predictably.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935188046115,"sku":"8M0147063","price":210.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8M0147063_Main-1.jpg?v=1760631428"},{"product_id":"mercury-4-3l-carb-without-remote-oil-mercruiser-100-hour-maintenance-kit-8m0147050-1993-current","title":"Mercury – 100 Hour Maintenance Kit | MerCruiser 4.3L V6 Sterndrive | Complete Service Components | 8M0147050","description":"\u003cp data-start=\"0\" data-end=\"126\"\u003e\u003cstrong data-start=\"0\" data-end=\"124\"\u003eMercury – 100 Hour Maintenance Kit | MerCruiser 4.3L V6 Sterndrive | Complete Service Components | 8M0147050\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"130\" data-end=\"694\"\u003e\u003cstrong data-start=\"130\" data-end=\"142\"\u003eOverview\u003c\/strong\u003e\u003cbr data-start=\"142\" data-end=\"146\"\u003eEvery boater knows the kind of quiet confidence that comes from an engine that starts smoothly and runs strong, season after season. It is not luck — it is maintenance done right. With the Mercury 8M0147050 100 Hour Maintenance Kit, you get everything you need to keep your MerCruiser 4.3L V6 sterndrive performing at its best, all in one neatly packaged, easy-to-use kit. No guesswork. No second-guessing. Just the same dependable parts Mercury installs at the factory, ready to help you stay ahead of wear before it steals power or reliability.\u003c\/p\u003e\n\u003cp data-start=\"698\" data-end=\"897\"\u003eWhether you cruise wide-open bays, pull kids on wakeboards, or spend long days drifting and relaxing, this kit helps ensure your engine is protected and ready for whatever the water hands you next.\u003c\/p\u003e\n\u003cp data-start=\"901\" data-end=\"919\"\u003e\u003cstrong data-start=\"901\" data-end=\"917\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"921\" data-end=\"1305\"\u003e\n\u003cli data-start=\"921\" data-end=\"996\"\u003e\n\u003cp data-start=\"923\" data-end=\"996\"\u003eComplete 100-hour service kit for MerCruiser 4.3L V6 sterndrive engines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"998\" data-end=\"1060\"\u003e\n\u003cp data-start=\"1000\" data-end=\"1060\"\u003eIncludes oil filter, fuel filter, and gearcase drain seals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1062\" data-end=\"1149\"\u003e\n\u003cp data-start=\"1064\" data-end=\"1149\"\u003ePremium filtration with high internal pleat counts for clean, efficient lubrication\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1151\" data-end=\"1229\"\u003e\n\u003cp data-start=\"1153\" data-end=\"1229\"\u003eHeavy-duty electroplated filter housings for superior corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1231\" data-end=\"1305\"\u003e\n\u003cp data-start=\"1233\" data-end=\"1305\"\u003eMeets all Mercury Marine OEM performance and durability specifications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1309\" data-end=\"1342\"\u003e\u003cstrong data-start=\"1309\" data-end=\"1340\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1344\" data-end=\"1673\"\u003e\n\u003cli data-start=\"1344\" data-end=\"1423\"\u003e\n\u003cp data-start=\"1346\" data-end=\"1423\"\u003eFits MerCruiser 4.3L V6 sterndrives made by General Motors (1993 and newer)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1425\" data-end=\"1494\"\u003e\n\u003cp data-start=\"1427\" data-end=\"1494\"\u003eCompatible with models featuring engine-block-mounted oil filters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1496\" data-end=\"1577\"\u003e\n\u003cp data-start=\"1498\" data-end=\"1577\"\u003eIdeal for runabouts, bowriders, small cruisers, and multipurpose family boats\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1579\" data-end=\"1673\"\u003e\n\u003cp data-start=\"1581\" data-end=\"1673\"\u003eSuitable for both freshwater and saltwater environments when paired with proper lubricants\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1677\" data-end=\"2177\"\u003e\u003cstrong data-start=\"1677\" data-end=\"1713\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003cbr data-start=\"1713\" data-end=\"1717\"\u003eA 100-hour service is more than a checklist — it is a reset that keeps your engine strong, smooth, and dependable. With the Mercury Marine part number 8M0147050 kit, you will notice sharper throttle response, steadier oil pressure, and more consistent cooling performance. The filters clean efficiently without restricting flow, and the new gearcase seals help maintain a tight, leak-free lower unit that stands up to the constant stress of marine operation.\u003c\/p\u003e\n\u003cp data-start=\"2181\" data-end=\"2509\"\u003eEverything fits exactly as it should because it is all genuine Mercury gear. Threads catch cleanly. Seals seat properly. And installation is straightforward even for boaters who prefer to handle their own routine service. With this kit, you are not just replacing parts — you are renewing confidence in the heart of your boat.\u003c\/p\u003e\n\u003cp data-start=\"2513\" data-end=\"2848\"\u003e\u003cstrong data-start=\"2513\" data-end=\"2528\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003cbr data-start=\"2528\" data-end=\"2532\"\u003eAftermarket parts may look similar, but they rarely match the internal quality, corrosion protection, and precision engineering built into OEM Mercury components. Mercury designs its filters to withstand high load, high heat, and constant exposure to moisture — the exact conditions your engine faces every outing.\u003c\/p\u003e\n\u003cp data-start=\"2852\" data-end=\"3082\"\u003eBuying OEM means fewer surprises, longer service life, and performance that stays true to the engine’s original design. It is simply the smarter choice for anyone who plans to keep their boat running for years, not just seasons.\u003c\/p\u003e\n\u003cp data-start=\"3086\" data-end=\"3103\"\u003e\u003cstrong data-start=\"3086\" data-end=\"3101\"\u003eFAQ Section\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3107\" data-end=\"3271\"\u003e\u003cstrong data-start=\"3107\" data-end=\"3147\"\u003eQ1: Which engines does this kit fit?\u003c\/strong\u003e\u003cbr data-start=\"3147\" data-end=\"3151\"\u003eIt fits MerCruiser 4.3L V6 sterndrive engines built by General Motors from 1993 onward with block-mounted oil filters.\u003c\/p\u003e\n\u003cp data-start=\"3275\" data-end=\"3478\"\u003e\u003cstrong data-start=\"3275\" data-end=\"3331\"\u003eQ2: What makes this different from aftermarket kits?\u003c\/strong\u003e\u003cbr data-start=\"3331\" data-end=\"3335\"\u003eGenuine Mercury filters offer better filtration media, stronger housings, and perfect fitment — all engineered for real-world marine demands.\u003c\/p\u003e\n\u003cp data-start=\"3482\" data-end=\"3683\"\u003e\u003cstrong data-start=\"3482\" data-end=\"3540\"\u003eQ3: How do I know this is the right kit for my engine?\u003c\/strong\u003e\u003cbr data-start=\"3540\" data-end=\"3544\"\u003eCheck your engine’s serial number and confirm it is a 4.3L V6 model from 1993 or newer with the oil filter mounted directly to the block.\u003c\/p\u003e\n\u003cp data-start=\"3687\" data-end=\"3824\"\u003e\u003cstrong data-start=\"3687\" data-end=\"3738\"\u003eQ4: Can it be used in saltwater and freshwater?\u003c\/strong\u003e\u003cbr data-start=\"3738\" data-end=\"3742\"\u003eYes. All components are designed for reliable performance in either environment.\u003c\/p\u003e\n\u003cp data-start=\"3828\" data-end=\"3983\"\u003e\u003cstrong data-start=\"3828\" data-end=\"3873\"\u003eQ5: Is installation easy for most owners?\u003c\/strong\u003e\u003cbr data-start=\"3873\" data-end=\"3877\"\u003eIf you are comfortable with basic maintenance, you will find the installation simple using common tools\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935188078883,"sku":"8M0147050","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8M0147050_Main.jpg?v=1760631408"},{"product_id":"mercury-4-3l-mpi-alpha-rwc-mercruiser-300-hour-service-kit-8m0147064-2002-current","title":"Mercury – 300 Hour Maintenance Kit | MerCruiser 4.3L MPI Alpha Series | OEM Service Components | 8M0147064","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – 300 Hour Maintenance Kit | MerCruiser 4.3L MPI Alpha Series | OEM Service Components | 8M0147064\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 engine is ready for whatever the water throws your way. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhen you run a MerCruiser 4.3L MPI with an Alpha sterndrive, you expect smooth throttle response, steady cooling, and the kind of reliability that lets you explore a little farther each time. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury 8M0147064 300 Hour Maintenance Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e keeps that trust alive. It’s the kit you reach for when you’d rather enjoy your season than worry about preventable breakdowns. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEverything inside is purpose-built, familiar, and designed to keep your engine running the way it did on its best day.\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\n\u003cspan data-preserver-spaces=\"true\"\u003eComplete \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e300-hour service kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e for MerCruiser 4.3L MPI engines\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eIncludes \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eoil filter, fuel filter, gearcase drain seals, spark plugs, thermostat, thermostat gasket, serpentine belt, and IAC air filter\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003ePremium filtration components with \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003ehigh pleat counts\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eHeavy-duty \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eelectroplated housings\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e for corrosion resistance\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eAssembled to meet \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury Marine OEM specifications\u003c\/span\u003e\u003c\/strong\u003e\n\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\n\u003cspan data-preserver-spaces=\"true\"\u003eFits \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMerCruiser 4.3L MPI engines\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e made by General Motors\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eFor engines paired with an \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eAlpha sterndrive\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eCompatible with model years \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e2002 and newer\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003ePerfect for \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003erunabouts\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003ebowriders\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003efamily cruisers\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003esport boats\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, and \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003efishing boats\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e using the 4.3L MPI package\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 300-hour service isn’t just another item on the checklist—it’s a reset button for your engine’s dependability. Each part in this kit plays a role you’ll feel out on the water. The new spark plugs bring back crisp ignition. The IAC air filter and fuel filter help the engine breathe and burn clean, giving you steadier idle and smoother acceleration. Fresh gearcase seals keep the oil where it belongs, fighting off the wear that comes with long days spent at various speeds.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThe heavy-duty thermostat and gasket restore proper temperature regulation, meaning the engine runs cooler and more consistent when you’re pushing through chop or easing into the no-wake zone. And because every component is selected specifically for the 4.3L MPI\/Alpha pairing, you don’t deal with the uncertainty of mismatched aftermarket pieces. Everything fits tight. Everything works right. It’s maintenance made simple so your time can be spent boating—not wrenching.\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\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhen it comes to service intervals this important, OEM isn’t a luxury—it’s your best protection. Mer\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ecury designs these parts around the exact operating demands of the 4.3L MPI engine. The fit is precise, the filtration is proven, and the materials are chosen specifically to handle marine heat, vibration, and corrosion. Aftermarket kits often cut corners on filter quality and seal durability, which can create new problems instead of preventing them. Wit\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eh this kit, you know you’re installing the same caliber of components Mercury trusts on every factory build.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIf you want long engine life, factory reliability, and zero guesswork, OEM is the only real 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 maintenance kit fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It fits \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMerCruiser 4.3L MPI engines with Alpha sterndrives\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e from 2002 and newer.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: Why choose this over aftermarket kits?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e OEM components match the exact specs Mercury designed for your engine—better fit, better longevity, better reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How do I confirm this is the correct kit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Check that your engine is a \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e4.3L MPI\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e paired with an \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eAlpha sterndrive\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e and falls within the \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e2002+ model range\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Can it be used in both freshwater and saltwater?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes—every component is built to withstand the corrosive challenges of either environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation straightforward?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Most boat owners find the kit intuitive to use. Each part replaces a factory component directly, with no modification needed.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935188308259,"sku":"8M0147064","price":309.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8M0147064_Main-1.jpg?v=1760631426"},{"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"}],"url":"https:\/\/partsvu.com\/en-ca\/collections\/4-3l-mercruiser-100-300-hour-service-kits.oembed","provider":"PartsVu","version":"1.0","type":"link"}