{"product_id":"sierra-18-0956-1-exhaust-manifold-gasket-for-chrysler-460-cid-inboard-replaces-118-614","title":"Sierra Exhaust Manifold Gasket 18-0956-1 for 3.7L 224 CID Chrysler Inboard Engines","description":"\u003cp\u003eThe Sierra Exhaust Manifold Gasket, part number 18-0956-1, is a round replacement gasket engineered for 3.7L 224 CID 4-cylinder Chrysler inboard marine engines. This gasket seals the connection at the exhaust manifold, maintaining a tight seal against exhaust gases and coolant while the engine runs, which helps prevent leaks that can lead to overheating or exhaust intrusion into the bilge.\u003c\/p\u003e\u003cp\u003eThis gasket is used as part of the manifold gasket application for 170 HP and 180 HP 3.7L 224 CID engines built in 1985-1986 and 1987, and it is specified for engines fitted with either aluminum or cast iron exhaust manifolds, depending on the accompanying gasket set. It ships as a single gasket unit and is finished in white. Marine exhaust manifold gaskets like this one are a wear item that should be replaced any time the exhaust manifold is removed for service, since reusing an old gasket risks an improper seal and a repeat leak.\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 18-0956-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Exhaust Manifold Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282365813\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eChrysler 3.7L 224 CID 4-cylinder inboard engines, 170 HP, 1985-1986, engines with aluminum exhaust manifolds, serial numbers 6916779 to B434940\u003c\/li\u003e\n\u003cli\u003eChrysler 3.7L 224 CID 4-cylinder inboard engines, 170 HP, 1985-1986, engines with cast iron exhaust manifolds, serial numbers 6916779 to B434940\u003c\/li\u003e\n\u003cli\u003eChrysler 3.7L 224 CID 4-cylinder inboard engines, 180 HP, 1987, engines with aluminum exhaust manifolds, serial numbers B436391 to B775248\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eNo OEM cross-reference numbers are listed for this gasket.\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-0956-1 exhaust manifold gasket fit?\u003c\/strong\u003e This gasket fits Chrysler 3.7L 224 CID 4-cylinder inboard engines rated at 170 HP (1985-1986) and 180 HP (1987).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-0956-1 work with both aluminum and cast iron exhaust manifolds?\u003c\/strong\u003e Yes, depending on the specific engine build. On the 170 HP 1985-1986 engines, 18-0956-1 is used with either the aluminum manifold gasket set or the cast iron manifold gasket set, and it is also used on the 180 HP 1987 aluminum manifold application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my engine's serial number is covered?\u003c\/strong\u003e For the 170 HP 1985-1986 application, 18-0956-1 covers serial numbers 6916779 through B434940. For the 180 HP 1987 application, it covers serial numbers B436391 through B775248.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-0956-1 gasket?\u003c\/strong\u003e The Sierra 18-0956-1 exhaust manifold gasket is white and round in shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package of 18-0956-1?\u003c\/strong\u003e Each package of the 18-0956-1 gasket contains one gasket unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-0956-1 exhaust manifold gasket weigh?\u003c\/strong\u003e The 18-0956-1 gasket weighs 0.2 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-0956-1 used alongside other gaskets in the same repair?\u003c\/strong\u003e Yes. For the 170 HP 1985-1986 aluminum manifold application, 18-0956-1 is used together with 18-1937 and 18-0881-1. For the cast iron manifold application on the same engine, it is used together with 18-0113-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this gasket genuine Sierra or aftermarket?\u003c\/strong\u003e The 18-0956-1 exhaust manifold gasket is a genuine Sierra part, identified by Sierra part number 18-0956-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the exhaust manifold gasket?\u003c\/strong\u003e The 18-0956-1 gasket should be replaced any time the exhaust manifold is removed from a 3.7L 224 CID Chrysler inboard engine, since reinstalling a used gasket increases the risk of leaks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-0956-1 have a UPC I can use to verify the part?\u003c\/strong\u003e Yes, the Sierra 18-0956-1 exhaust manifold gasket carries UPC 808282365813.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988086468827,"sku":"SIE-18-0956-1","price":26.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0956_lg__01824.1558119064.500.750.jpg?v=1785188012","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-0956-1-exhaust-manifold-gasket-for-chrysler-460-cid-inboard-replaces-118-614","provider":"Good Vibes Marina","version":"1.0","type":"link"}