{"product_id":"sierra-18-2960-marine-head-gasket-for-johnson-evinrude-50-hp-outboard-1971-1975-replaces-omc-313413","title":"Sierra 18-2960 Head Gasket, Replaces OMC 313413, for Johnson\/Evinrude 50 HP Outboards (1971-1975)","description":"\u003cp\u003eThe Sierra 18-2960 is a head gasket engineered for Johnson and Evinrude 50 HP outboard motors (1971-1975). It seals the mating surface between the cylinder head and powerhead block, maintaining proper compression and preventing coolant or combustion leakage during operation. The gasket features a machined exterior finish for a precise, consistent fit against the block and head surfaces.\u003c\/p\u003e\u003cp\u003eThis gasket is a direct replacement for the original equipment part, and Sierra manufactures it to meet or exceed the specifications of the OEM component it replaces. Each package contains one head gasket, ready to install as part of a powerhead rebuild or top-end service. The 18-2960 measures 5.75 x 1 x 15.5 inches and weighs 0.21 pounds.\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 18-2960\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999314598\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 5.75 x 1 x 15.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.21 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1 gasket per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Johnson\/Evinrude 50 HP outboards (1971-1975)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 313413\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eJohnson 50 HP outboards (1971-1975)\u003c\/li\u003e\n\u003cli\u003eEvinrude 50 HP outboards (1971-1975)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e313413\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2960 head gasket fit?\u003c\/strong\u003e The Sierra 18-2960 is built for Johnson and Evinrude 50 HP outboard motors from 1971 to 1975.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-2960 the same as OMC 313413?\u003c\/strong\u003e Yes, Sierra 18-2960 is a direct replacement for the original equipment OMC part number 313413.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this gasket weigh?\u003c\/strong\u003e The Sierra 18-2960 head gasket weighs 0.21 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-2960 head gasket?\u003c\/strong\u003e It measures 5.75 x 1 x 15.5 inches, sized to seal the head-to-block mating surface on Johnson\/Evinrude 50 HP powerheads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package?\u003c\/strong\u003e Each package of the Sierra 18-2960 contains one head gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2960 meet OEM quality standards?\u003c\/strong\u003e Sierra manufactures the 18-2960 head gasket to meet or exceed the specifications of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the 18-2960 gasket have?\u003c\/strong\u003e The 18-2960 head gasket has a machined exterior finish for a precise seal against the head and block.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2960 a genuine OEM part or aftermarket?\u003c\/strong\u003e The 18-2960 is a Sierra aftermarket replacement gasket, engineered to meet or exceed the OEM part it replaces rather than being sourced from Johnson\/Evinrude directly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-2960 gasket work on other horsepower outboards besides 50 HP?\u003c\/strong\u003e The 18-2960 head gasket is designated for Johnson and Evinrude 50 HP outboards (1971-1975); no other horsepower applications are listed for this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with the Sierra 18-2960 gasket?\u003c\/strong\u003e The Sierra 18-2960 head gasket carries UPC 030999314598.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2960 head gasket still available from the manufacturer?\u003c\/strong\u003e Yes, the Sierra 18-2960 head gasket has not been discontinued by the manufacturer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat part does the Sierra 18-2960 replace during a powerhead rebuild?\u003c\/strong\u003e During a Johnson\/Evinrude 50 HP powerhead rebuild, the 18-2960 replaces the original head gasket, OEM number 313413.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988135555291,"sku":"SIE-18-2960","price":28.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2960_lg__99212.1558125436.500.750.jpg?v=1785189200","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2960-marine-head-gasket-for-johnson-evinrude-50-hp-outboard-1971-1975-replaces-omc-313413","provider":"Good Vibes Marina","version":"1.0","type":"link"}