{"product_id":"sierra-18-8402-1-marine-starter-bolt-kit-2-bolts-replaces-mercruiser-50-812428a3-fits-gm-4-3l-5-0l-5-7l-with-14-in-flywheel","title":"Sierra Starter Mounting Bolt Kit 18-8402-1, Replaces 50-806963A4, Fits Chevy 4.3L\/5.7L Alpha\/Bravo Starters","description":"\u003cp\u003eThe Sierra 18-8402-1 is a starter mounting bolt kit for the Sierra 18-8402 permanent magnet I\/O starter, a permanent magnet, 11 tooth starter built for GM-based sterndrive engines. The kit supplies the two bolts used to secure that starter to the engine block: one 18-8402 bolt and one 18-8404 bolt. These are the correct replacement fasteners when the original mounting bolts are lost, damaged, or corroded during a starter swap.\u003c\/p\u003e\u003cp\u003eThis bolt kit is matched to starters fitting Chevy engines with 12 3\/4 inch flywheels using a straight across bolt pattern, and is specified for 4.3LX\/LXH Alpha\/Bravo 262 CID engines (SN OF803000AN through OF803114AN) and 5.7L Alpha (EFI)\/5.7L Bravo (EFI) engines (SN 355305AN\/22560AN). Using the correct mounting bolts ensures the starter seats and aligns properly against the flywheel housing, maintaining the straight across bolt pattern required for these applications.\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 18-8402-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Starter Mounting Bolt Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e One 18-8402 bolt and one 18-8404 bolt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt Pattern:\u003c\/strong\u003e Straight across\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.17 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eChevy engines with 12 3\/4 inch flywheels\u003c\/li\u003e\n\u003cli\u003e4.3LX\/LXH Alpha\/Bravo 262 CID, SN OF803000AN\/OF803114AN\u003c\/li\u003e\n\u003cli\u003e5.7L Alpha (EFI)\/5.7L Bravo (EFI), SN 355305AN\/22560AN\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e50-806963A4\u003c\/li\u003e\n\u003cli\u003e50-806965A2\u003c\/li\u003e\n\u003cli\u003e50-806965A4\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-8402-1 bolt kit include?\u003c\/strong\u003e The 18-8402-1 kit includes one 18-8402 bolt and one 18-8404 bolt, the two mounting bolts used to secure a Sierra 18-8402 starter to the engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat starter is the 18-8402-1 bolt kit designed for?\u003c\/strong\u003e This bolt kit is designed for the Sierra 18-8402 permanent magnet I\/O starter, an 11 tooth starter for GM-based sterndrive engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich engines does the 18-8402-1 fit?\u003c\/strong\u003e It fits Chevy engines with 12 3\/4 inch flywheels, specifically 4.3LX\/LXH Alpha\/Bravo 262 CID engines (SN OF803000AN\/OF803114AN) and 5.7L Alpha (EFI)\/5.7L Bravo (EFI) engines (SN 355305AN\/22560AN).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat bolt pattern does this kit use?\u003c\/strong\u003e The 18-8402-1 mounting bolts are set up for a straight across bolt pattern, matching the mounting configuration of the corresponding starter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-8402-1 replace OEM starter mounting bolts?\u003c\/strong\u003e Yes, the 18-8402-1 kit is a cross-reference replacement for OEM numbers 50-806963A4, 50-806965A2, and 50-806965A4.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-8402-1 bolt kit weigh?\u003c\/strong\u003e The Sierra 18-8402-1 bolt kit weighs 0.17 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-8402-1 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-8402-1 is the Sierra manufacturer part number for this starter mounting bolt kit, not a generic aftermarket substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need both bolts in the 18-8402-1 kit to mount the starter?\u003c\/strong\u003e Yes, the starter mount uses both fasteners together: the 18-8402 bolt and the 18-8404 bolt included in the 18-8402-1 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the 18-8402-1 bolt kit manufactured?\u003c\/strong\u003e The Sierra 18-8402-1 starter bolt kit is manufactured in China.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-8402-1 bolts fit a starter without a 12 3\/4 inch flywheel?\u003c\/strong\u003e No, the 18-8402-1 bolt kit is specified for Chevy engines with 12 3\/4 inch flywheels using a straight across bolt pattern; it is not listed as fitting other flywheel sizes.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988433940699,"sku":"SIE-18-8402-1","price":10.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__21121.1753840683.500.750.jpg?v=1785188723","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-8402-1-marine-starter-bolt-kit-2-bolts-replaces-mercruiser-50-812428a3-fits-gm-4-3l-5-0l-5-7l-with-14-in-flywheel","provider":"Good Vibes Marina","version":"1.0","type":"link"}