{"product_id":"arco-starter-mounting-bolt-kit-gear-reduction-57-mbk450","title":"ARCO Starter Mounting Bolt Kit – Gear Reduction Starters | SKU 57-MBK450","description":"\u003ch2\u003eARCO Starter Mounting Bolt Kit – Gear Reduction Starters\u003c\/h2\u003e\u003cp\u003eA purpose-built mounting bolt kit for installing gear reduction starters on marine inboard and stern-drive engines. This kit includes two long 3\/8–16 N.C. thread mounting bolts and is the correct hardware to use when upgrading from a 10MT-style starter to a gear reduction unit. Using the right mounting hardware ensures a secure, properly aligned installation that protects both the starter and the engine block.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIncludes 2 long mounting bolts, 3\/8–16 N.C. thread\u003c\/li\u003e\n\u003cli\u003eRequired when replacing a 10MT starter with a gear reduction starter\u003c\/li\u003e\n\u003cli\u003eFits ARCO gear reduction starters with staggered bolt mounting pattern\u003c\/li\u003e\n\u003cli\u003eAlso fits all Delco gear reduction starters with staggered bolt mounting pattern\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible\u003c\/strong\u003e with metric engines or 10MT starters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eARCO gear reduction starters (staggered bolt mounting pattern)\u003c\/li\u003e\n\u003cli\u003eDelco gear reduction starters (staggered bolt mounting pattern)\u003c\/li\u003e\n\u003cli\u003eInboard and stern-drive engines using 3\/8–16 N.C. thread starter mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible:\u003c\/strong\u003e metric engines or 10MT-style starters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePairs Well With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arco-starter-solenoid-mercruiser-cobra-volvo-penta-sw450\"\u003eARCO Starter Solenoid – MerCruiser, Cobra \u0026amp; Volvo Penta (SW450)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arco-heavy-duty-starter-solenoid-mercruiser-omc-volvo-penta-sw463\"\u003eARCO Heavy-Duty Starter Solenoid – MerCruiser, OMC, Volvo Penta (SW463)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eBest suited for anyone upgrading an older 10MT-style starter to a modern gear reduction unit. Gear reduction starters use a different bolt spacing and length than 10MT starters, so the factory bolts from the old unit will not work. This kit is the correct hardware to complete that swap cleanly. Confirm your engine uses standard N.C. (National Coarse) thread — metric-threaded engine blocks require different hardware not included in this kit.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250828640292,"sku":"57-MBK450","price":47.09,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/57-MBK450.jpg?v=1786510776","url":"https:\/\/marisolmarine.com\/products\/arco-starter-mounting-bolt-kit-gear-reduction-57-mbk450","provider":"Marisol Marine Company","version":"1.0","type":"link"}