{"product_id":"sierra-18-1953-2-marine-exhaust-manifold-replaces-mercruiser-87114a19-for-gm-v8-305-350-cu-in-models-200-228-230-260-898","title":"Sierra Exhaust Manifold 18-1953-2 for GM V-8 305\/350\/377 cid MCM\/MIE Marine Engines","description":"\u003cp\u003eThis Sierra exhaust manifold, part number 18-1953-2, is built for GM V-8 305, 350, and 377 cid MCM\/MIE marine engines (1983-2002). It routes hot exhaust gases away from the engine block and mixes them with cooling water before they exit through the riser and elbow assembly, protecting the engine from heat damage while running. The manifold is a universal fit that installs on either the port or starboard side of the engine, so one part number covers both mounting locations.\u003c\/p\u003e\u003cp\u003eThe manifold pairs with a specific set of Sierra components to complete the exhaust path. It accepts either the 18-1974-1 elbow (3 inch hose, 0 degree down angle) or the 18-1976-2 elbow (4 inch hose, 7 degree down angle), sealed with elbow gasket 18-2849-1, 18-0897, or 18-0672. For installations that need additional height, the manifold works with the 18-1908 three-inch spacer or the 18-1985 six-inch spacer, each requiring its own mounting kit. Sierra engineers this manifold to meet or exceed the performance of the original equipment part it replaces, and it is backed by a limited warranty.\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 18-1953-2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Exhaust Manifold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282195151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 49.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e GM V-8 305, 350, and 377 cid MCM\/MIE marine engines (1983-2002)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide:\u003c\/strong\u003e Port and starboard (universal fit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Elbow (3 inch hose):\u003c\/strong\u003e 18-1974-1, 0 degree down angle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Elbow (4 inch hose):\u003c\/strong\u003e 18-1976-2, 7 degree down angle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Spacer (3 inch):\u003c\/strong\u003e 18-1908\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Spacer (6 inch):\u003c\/strong\u003e 18-1985\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Elbow Gasket:\u003c\/strong\u003e 18-2849-1, 18-0897, or 18-0672\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGM V-8 305, 350, and 377 cid MCM\/MIE marine engines (1983-2002)\u003c\/li\u003e\n\u003cli\u003eFits both port and starboard mounting positions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-1953-2 exhaust manifold fit?\u003c\/strong\u003e The 18-1953-2 manifold is built for GM V-8 305, 350, and 377 cid MCM\/MIE marine engines (1983-2002).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-1953-2 fit both port and starboard sides?\u003c\/strong\u003e Yes, the Sierra 18-1953-2 manifold is a universal fit that installs on either the port or starboard side of the engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this exhaust manifold weigh?\u003c\/strong\u003e The Sierra 18-1953-2 exhaust manifold weighs 49.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich elbow works with the 18-1953-2 manifold?\u003c\/strong\u003e Two elbow options fit this manifold: the 18-1974-1 (3 inch hose, 0 degree down angle) and the 18-1976-2 (4 inch hose, 7 degree down angle).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat gasket do I need to seal the elbow to the 18-1953-2 manifold?\u003c\/strong\u003e Elbow gasket 18-2849-1, 18-0897, or 18-0672 is used to seal the elbow to this manifold.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I raise the riser height on this manifold?\u003c\/strong\u003e Yes, the 18-1953-2 manifold accepts a 3 inch spacer (18-1908) or a 6 inch spacer (18-1985) for additional riser height, each requiring its own mounting kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a mounting kit included with the manifold?\u003c\/strong\u003e The manifold itself is the exhaust manifold casting; mounting kits for the elbow and spacer combinations are separate components matched to the elbow chosen.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-1953-2 is a genuine Sierra part, engineered to meet or exceed the performance of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the manufacturer part number for this manifold?\u003c\/strong\u003e The manufacturer part number is 18-1953-2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this manifold come with a warranty?\u003c\/strong\u003e The Sierra 18-1953-2 exhaust manifold is backed by a limited warranty.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988089450715,"sku":"SIE-18-1953-2","price":315.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-1953-2__05081.1737866868.500.750.jpg?v=1785189050","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-1953-2-marine-exhaust-manifold-replaces-mercruiser-87114a19-for-gm-v8-305-350-cu-in-models-200-228-230-260-898","provider":"Good Vibes Marina","version":"1.0","type":"link"}