{"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","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-8-9-9-hp-complete-300-hour-service-maintenance-kit-25w-40-synthetic-blend-command-thrust-bigfoot-only-8m0120867-s-n-0r042475-above","provider":"PartsVu","version":"1.0","type":"link"}