{"product_id":"marine-starter-for-mercruiser-3-0l-1999-newer-4-inch-flywheel-replaces-oem-50-807904a1-12v-permanent-magnet-gear-reduction-18-6275-1","title":"Sierra 18-6275-1 Starter, Late Model GM 14 Inch Flywheel, Replaces 3857747, 3860566","description":"\u003cp\u003eThe Sierra 18-6275-1 is a permanent magnet gear reduction starter built for late model GM 14 inch flywheel inboard marine engines. It is designed as a direct fit replacement, engineered to meet SAE J1171 marine ignition protection standards so it can be safely used around gasoline engine compartments and fuel vapors. The starter is rated at 1.7 KW and uses a 2 long bolt offset mounting pattern to match the original starter's bolt spacing on the engine block.\u003c\/p\u003e\u003cp\u003eAs a permanent magnet gear reduction design, the 18-6275-1 is lighter and more compact than older style direct drive starters while still delivering strong cranking torque for reliable cold starts. It is built for inboard applications and is intended to replace worn or failed OEM starters carrying part numbers 3857747 or 3860566. Buyers replacing a tired starter on a late model GM inboard with a 14 inch flywheel can install this unit without modifying the existing mounting points, provided the flywheel size and bolt pattern match.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-6275-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Starter Motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volts (DC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWattage:\u003c\/strong\u003e 1.7 KW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e SAE J1171\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlywheel Fitment:\u003c\/strong\u003e 14 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt Pattern:\u003c\/strong\u003e 2 Long Bolt Offset Pattern\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Inboard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStarter Type:\u003c\/strong\u003e Permanent Magnet Gear Reduction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 11.7 x 7.7 x 6.6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 9.67 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 3857747, 3860566\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eLate model GM inboard engines with a 14 inch flywheel\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3857747\u003c\/li\u003e\n\u003cli\u003e3860566\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-6275-1 starter fit?\u003c\/strong\u003e The Sierra 18-6275-1 is built for late model GM inboard engines with a 14 inch flywheel, using a 2 long bolt offset mounting pattern.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-6275-1 a direct replacement for OEM part 3857747?\u003c\/strong\u003e Yes, the Sierra 18-6275-1 starter replaces OEM part numbers 3857747 and 3860566.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-6275-1 also replace part number 3860566?\u003c\/strong\u003e Yes, both 3857747 and 3860566 are listed as OEM replacements covered by the Sierra 18-6275-1 starter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat voltage and wattage is this starter rated for?\u003c\/strong\u003e This starter runs on a 12 volt DC electrical system and is rated at 1.7 KW.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-6275-1 safe for use near gasoline engines?\u003c\/strong\u003e It meets the SAE J1171 marine ignition protection standard, which covers safe operation around gasoline engine compartments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of starter design does the 18-6275-1 use?\u003c\/strong\u003e It is a permanent magnet gear reduction starter, a lighter and more compact design than older direct drive starters while still providing strong cranking power.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-6275-1 starter weigh?\u003c\/strong\u003e The Sierra 18-6275-1 starter weighs 9.67 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the physical dimensions of this starter?\u003c\/strong\u003e The 18-6275-1 measures 11.7 x 7.7 x 6.6 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-6275-1 starter housing made of?\u003c\/strong\u003e The housing and core components of the Sierra 18-6275-1 are made of metal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat bolt pattern does the 18-6275-1 use for mounting?\u003c\/strong\u003e It uses a 2 long bolt offset mounting pattern, matching the original equipment mounting points on late model GM 14 inch flywheel inboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this starter intended for inboard or sterndrive use?\u003c\/strong\u003e The Sierra 18-6275-1 is designed for inboard engine applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-6275-1 fit an engine with a different flywheel size?\u003c\/strong\u003e No, the 18-6275-1 is built specifically to match a 14 inch flywheel; a different flywheel size requires a different Sierra starter part number.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988356051163,"sku":"SIE-18-6275-1","price":215.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-6275-1.png?v=1784938580","url":"https:\/\/www.goodvibesmarina.com\/products\/marine-starter-for-mercruiser-3-0l-1999-newer-4-inch-flywheel-replaces-oem-50-807904a1-12v-permanent-magnet-gear-reduction-18-6275-1","provider":"Good Vibes Marina","version":"1.0","type":"link"}