{"product_id":"exhaust-housing-gasket-for-johnson-evinrude-35-40-hp-outboard-replaces-oem-310137-sierra-18-2894-9-pack-of-2","title":"Sierra 18-2894-9 Exhaust Housing Gasket, Replaces 304314, Johnson\/Evinrude 35\/40 HP, Pack of 2","description":"\u003cp\u003eThe Sierra 18-2894-9 Exhaust Housing Gasket is a marine engine gasket built for Johnson and Evinrude outboard applications, sized for 35\/40 HP powerheads. It seals the exhaust housing to prevent exhaust leakage and water intrusion at the joint, helping maintain proper exhaust flow and cooling performance. Each package contains two gaskets, giving you a spare on hand or enough to service two units in a single order. This gasket is interchangeable with Johnson\/Evinrude Outboard part number 304314, so it installs as a direct equivalent during a housing rebuild or routine maintenance. Sierra manufactures each gasket to meet or exceed the performance of the original equipment part it replaces, making it a reliable choice for outboard owners and marine technicians performing exhaust housing service. Use it whenever the exhaust housing is disassembled for inspection, cleaning, or repair, since gaskets should always be replaced rather than reused once the housing has been separated.\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 18-2894-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Exhaust Housing Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 2 gaskets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282163990\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson and Evinrude outboards, 35\/40 HP\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e304314\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2894-9 gasket fit?\u003c\/strong\u003e The 18-2894-9 exhaust housing gasket fits Johnson and Evinrude outboards in the 35\/40 HP range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the same as Johnson\/Evinrude part 304314?\u003c\/strong\u003e Yes, the Sierra 18-2894-9 is interchangeable with Johnson\/Evinrude Outboard part number 304314.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package?\u003c\/strong\u003e Each 18-2894-9 package includes two exhaust housing gaskets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this gasket weigh?\u003c\/strong\u003e The 18-2894-9 exhaust housing gasket weighs 0.1 pounds per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I reuse the old exhaust housing gasket instead of buying a new one?\u003c\/strong\u003e No, once the exhaust housing has been separated the original gasket should be discarded and replaced with a new Sierra 18-2894-9 gasket to ensure a proper seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2894-9 genuine or aftermarket?\u003c\/strong\u003e The 18-2894-9 is a Sierra-manufactured aftermarket gasket engineered to meet or exceed the performance of the original Johnson\/Evinrude equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order this part?\u003c\/strong\u003e An order of the Sierra 18-2894-9 includes two exhaust housing gaskets, sold as a pair per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this gasket work on any outboard horsepower?\u003c\/strong\u003e No, the 18-2894-9 exhaust housing gasket is designed specifically for Johnson and Evinrude 35\/40 HP outboard applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace the exhaust housing gasket?\u003c\/strong\u003e The exhaust housing gasket seals the joint between the exhaust housing and powerhead; a worn or damaged gasket like the original 304314 equivalent can allow exhaust or water leakage, which is when the 18-2894-9 should be installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat brand makes part number 18-2894-9?\u003c\/strong\u003e Sierra manufactures the 18-2894-9 exhaust housing gasket for Johnson and Evinrude outboards.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988132868315,"sku":"SIE-18-2894-9","price":12.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-2894-9__60806.1675691685.500.750.jpg?v=1785188152","url":"https:\/\/www.goodvibesmarina.com\/products\/exhaust-housing-gasket-for-johnson-evinrude-35-40-hp-outboard-replaces-oem-310137-sierra-18-2894-9-pack-of-2","provider":"Good Vibes Marina","version":"1.0","type":"link"}