{"product_id":"sierra-18-8502-exhaust-manifold-mounting-kit-for-gm-small-block-v8-305-350-cu-in-1979-1989-omc-volvo-penta","title":"Sierra 18-8502 Exhaust Manifold Mounting Kit for OMC Sterndrive\/Cobra I\/O, Fits Manifold 18-1986-1","description":"\u003cp\u003eThe Sierra 18-8502 Exhaust Manifold Mounting Kit supplies the hardware needed to install or reseal an exhaust manifold on OMC Sterndrive\/Cobra I\/O cooling systems. The kit is designed for use with Manifold 18-1986-1 and includes the mounting studs plus the 18-2949 manifold gasket required for a proper seal between the manifold and block, so you are not left sourcing individual studs or gaskets separately when servicing the exhaust system.\u003c\/p\u003e\u003cp\u003eThis kit is built to Sierra's standard for marine replacement parts, engineered to meet the demands of high-horsepower engines while standing up to the harsh marine environment. It is intended to meet or exceed the performance of the original equipment components it replaces. Fitment covers OMC GM Small Block V8 305-350 cu in engines (1979-89) as well as OMC\/Volvo GM Small Block 305-350 cu in applications, making it a direct match for boat owners servicing these OMC-equipped sterndrives. Every Sierra part in this kit is backed by Sierra's customer satisfaction warranty, giving installers confidence that the studs and gasket will hold up over repeated heat cycling and marine exposure.\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 18-8502\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Exhaust Manifold Mounting Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Mounting studs, 18-2949 manifold gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsed With:\u003c\/strong\u003e Manifold 18-1986-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282127350\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00808282127350\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.24 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Glass\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC Sterndrive\/Cobra I\/O cooling systems\u003c\/li\u003e\n\u003cli\u003eOMC GM Small Block V8 305-350 cu in (1979-89)\u003c\/li\u003e\n\u003cli\u003eOMC\/Volvo GM Small Block 305-350 cu in\u003c\/li\u003e\n\u003cli\u003eUse with Manifold 18-1986-1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eNo OEM cross-reference numbers listed\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-8502 mounting kit include?\u003c\/strong\u003e The kit includes the mounting studs and the 18-2949 manifold gasket needed to install or reseal an exhaust manifold, and it is designed for use with Manifold 18-1986-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the 18-8502 mounting kit fit?\u003c\/strong\u003e It fits OMC GM Small Block V8 305-350 cu in engines (1979-89) as well as OMC\/Volvo GM Small Block 305-350 cu in applications on Sterndrive\/Cobra I\/O systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich manifold does this mounting kit work with?\u003c\/strong\u003e Sierra 18-8502 is designed for use with Manifold 18-1986-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-8502 kit include the manifold gasket?\u003c\/strong\u003e Yes, the 18-2949 manifold gasket is included as part of the Sierra 18-8502 mounting kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-8502 mounting kit weigh?\u003c\/strong\u003e The Sierra 18-8502 Exhaust Manifold Mounting Kit weighs 0.24 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-8502 kit components?\u003c\/strong\u003e The listed item dimensions for the Sierra 18-8502 mounting kit are 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this kit made for OMC Sterndrive\/Cobra applications specifically?\u003c\/strong\u003e Yes, the 18-8502 mounting kit is built for OMC Sterndrive\/Cobra I\/O cooling system applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and material is the 18-8502 kit listed with?\u003c\/strong\u003e The Sierra 18-8502 kit is listed with a white color and glass material designation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre Sierra parts in the 18-8502 kit covered by a warranty?\u003c\/strong\u003e Yes, Sierra 18-8502 is covered under Sierra's customer satisfaction warranty like other Sierra parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-8502 kit the same as the 18-8507 kit?\u003c\/strong\u003e No, Sierra 18-8502 is a separate mounting kit used with Manifold 18-1986-1, while 18-8507 is a different mounting kit used with an elbow, so they are not interchangeable.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes Sierra 18-8502 include everything needed for a manifold reseal?\u003c\/strong\u003e It includes the mounting studs and the 18-2949 gasket for the manifold connection to Manifold 18-1986-1, covering the core hardware for that installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-8502 mounting kit an OEM or aftermarket part?\u003c\/strong\u003e Sierra 18-8502 is a Sierra-manufactured replacement kit engineered to meet or exceed the performance of the original equipment it replaces.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988433875163,"sku":"SIE-18-8502","price":57.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-8502_lg__37403.1558133027.500.750.jpg?v=1785188765","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-8502-exhaust-manifold-mounting-kit-for-gm-small-block-v8-305-350-cu-in-1979-1989-omc-volvo-penta","provider":"Good Vibes Marina","version":"1.0","type":"link"}