{"product_id":"marine-exhaust-manifold-18-1953-2-87114-860246-for-mcm-mie-gm-v8-305-377-cid","title":"Marine Exhaust Manifold 18-1953-2 87114 860246 For MCM\/MIE GM V8 (305, 377 CID)","description":"\u003ch2\u003eMarine Exhaust Manifold for MCM\/MIE GM\u003c\/h2\u003e\u003cp\u003eThis marine exhaust manifold, cross-referencing part numbers 18-1953-2, 87114, and 860246, directs exhaust gases out of compatible V8 marine engines while maintaining proper water cooling.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis marine exhaust manifold is designed to withstand the harsh operating environment of saltwater and freshwater boating. Featuring thick cast construction, this marine exhaust manifold provides uniform wall thickness to prevent premature burn-through and internal water leaks into the cylinders. This marine exhaust manifold is an essential replacement component to maintain safe engine operating temperatures and reliable exhaust flow.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHeavy-duty cast iron construction to resist corrosion and thermal expansion.\u003c\/li\u003e\n\u003cli\u003ePrecision-machined mounting surfaces for a leak-free seal against the cylinder head.\u003c\/li\u003e\n\u003cli\u003eOptimized water passages to ensure consistent cooling jacket flow.\u003c\/li\u003e\n\u003cli\u003eInternal corrosion-resistant coating to extend lifespan in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor MCM\/MIE GM V8 (305 CID) engines\u003c\/li\u003e\n\u003cli\u003efor MCM\/MIE GM V8 (377 CID) engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReplacing cracked or rusted-through exhaust manifolds to prevent engine hydrolock.\u003c\/li\u003e\n\u003cli\u003eRestoring correct cooling water routing within the boat exhaust system.\u003c\/li\u003e\n\u003cli\u003eRefurbishing marine inboard and stern drive engines during winterization or spring prep.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18-1953-2, 87114, 860246\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCast Iron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGM V8 (305, 377 CID)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Why do marine exhaust manifolds need to be replaced periodically? \u003cstrong\u003eA:\u003c\/strong\u003e Because they channel both hot exhaust and raw cooling water, the inner walls eventually corrode and thin out. If left unchanged, water can leak back into the cylinders and destroy the engine via hydrolock.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this manifold come with the mounting gaskets and bolts? \u003cstrong\u003eA:\u003c\/strong\u003e This manifold is sold as the main cast unit. It is highly recommended to purchase new marine-grade mounting gaskets and high-strength fasteners separately to ensure a proper gas and water seal.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44788831256662,"sku":"SZ1E03981","price":265.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/57_6c7f3544-632a-4ed0-b04c-9ba02f1062cb.jpg?v=1779930552","url":"https:\/\/www.solidspare.com\/products\/marine-exhaust-manifold-18-1953-2-87114-860246-for-mcm-mie-gm-v8-305-377-cid","provider":"Solid Spare","version":"1.0","type":"link"}