{"product_id":"sierra-18-0232-cover-gasket-replaces-mercury-27-703351-fits-3-cylinder-outboards-package-of-2","title":"Sierra Cover Gasket 18-0232 for Yamaha Outboard Engines, Replaces 27-81031M","description":"\u003cp\u003eThe Sierra 18-0232 is a cover gasket built for Yamaha outboard engines. It seals the mating surface between the engine cover and the block, preventing oil, coolant, or air leaks at that joint and helping the covered components run reliably. As a direct-fit replacement, it is engineered to match the exact profile and thickness of the original equipment gasket it replaces, so it installs without modification and restores a proper seal after the old gasket has hardened, torn, or compressed with age.\u003c\/p\u003e\u003cp\u003eThis gasket is manufactured by Sierra, a long-established supplier of marine engine parts, and is cross-referenced to the OEM Yamaha part number it replaces. It ships as a single gasket and is lightweight at just 0.01 pounds, reflecting its thin, flat construction typical of cover gaskets. Because gaskets are wear items that lose their sealing ability once removed or over time, keeping a replacement like the 18-0232 on hand makes routine cover maintenance straightforward.\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 18-0232\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Cover Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Yamaha outboard engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 27-81031M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999973788\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00030999973788\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Yamaha outboard engines.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003e27-81031M\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-0232 cover gasket fit?\u003c\/strong\u003e The Sierra 18-0232 cover gasket is designed for Yamaha outboard engines and installs in place of the original cover gasket without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-0232 replace OEM part 27-81031M?\u003c\/strong\u003e Yes, the Sierra 18-0232 is a direct replacement for OEM Yamaha part 27-81031M and is built to the same fit and seal profile.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-0232 cover gasket weigh?\u003c\/strong\u003e The Sierra 18-0232 cover gasket weighs 0.01 pounds, consistent with its thin, flat gasket construction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-0232 sold as a single gasket or in a multi-pack?\u003c\/strong\u003e The Sierra 18-0232 is sold as a single cover gasket, with one item per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-0232 cover gasket?\u003c\/strong\u003e The UPC for the Sierra 18-0232 cover gasket is 030999973788, with a corresponding GTIN of 00030999973788.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does a cover gasket like the 18-0232 actually do?\u003c\/strong\u003e A cover gasket seals the joint between an engine cover and the block it mounts to, preventing leaks at that surface; the 18-0232 performs this function on applicable Yamaha outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0232 an OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-0232 is a Sierra aftermarket gasket manufactured to replace OEM Yamaha part 27-81031M, not an OEM-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the 18-0232 cover gasket be replaced?\u003c\/strong\u003e A cover gasket such as the 18-0232 should be replaced any time the cover it seals is removed, or if it shows signs of hardening, tearing, or leaking.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-0232 gasket be reused after removal?\u003c\/strong\u003e No, cover gaskets including the 18-0232 are designed for one-time use and should be replaced with a new gasket any time the cover is taken off.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the package with the Sierra 18-0232?\u003c\/strong\u003e The package contains one Sierra 18-0232 cover gasket and no additional hardware or components.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988059730139,"sku":"SIE-18-0232","price":1.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0232_lg__04249.1558118069.500.750.jpg?v=1785188635","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-0232-cover-gasket-replaces-mercury-27-703351-fits-3-cylinder-outboards-package-of-2","provider":"Good Vibes Marina","version":"1.0","type":"link"}