{"product_id":"sierra-18-7130-o-ring-for-omc-cobra-sterndrive-bearing-housing-replaces-omc-314728-354731-2-125-in-id-rubber-o-ring","title":"Sierra O-Ring 18-7130, Replaces OMC 314728, for Johnson\/Evinrude and OMC Sterndrive\/Cobra Stern Drive","description":"\u003cp\u003eThe Sierra 18-7130 is a rubber O-ring built as a direct replacement for select Johnson\/Evinrude and OMC Sterndrive\/Cobra Stern Drive engines. It measures 2.125 inches (54 mm) inside diameter with a 0.100 inch (2.5 mm) cross-sectional width, and each package contains one O-ring. The ring is molded from black rubber for resistance to marine fuels, oils, and water exposure in sterndrive and outboard applications.\u003c\/p\u003e\u003cp\u003eThis O-ring is used as a sealing component within the sterndrive\/outboard assembly, cross-referencing directly to OMC part number 314728. Sierra manufactures replacement parts that meet or exceed the specifications of the original equipment they replace, making the 18-7130 a straightforward like-for-like swap when the factory O-ring has hardened, cracked, or lost its seal. Before ordering, confirm the 2.125 inch I.D. And 0.100 inch width match the O-ring being replaced on your engine.\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 18-7130\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e O-Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter:\u003c\/strong\u003e 2.125 inches (54 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 0.100 inches (2.5 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 O-ring per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999321459\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 314728\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for select Johnson\/Evinrude and OMC Sterndrive\/Cobra Stern Drive engines.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e314728\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-7130 O-ring fit?\u003c\/strong\u003e The 18-7130 is designed for select Johnson\/Evinrude and OMC Sterndrive\/Cobra Stern Drive engines. Confirm the 2.125 inch inside diameter matches your original O-ring before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the exact dimensions of this O-ring?\u003c\/strong\u003e The Sierra 18-7130 measures 2.125 inches (54 mm) inside diameter with a 0.100 inch (2.5 mm) width.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7130 the same as OMC part number 314728?\u003c\/strong\u003e Yes, the Sierra 18-7130 cross-references directly to OMC part number 314728 and is built as a direct replacement for it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many O-rings come in one package?\u003c\/strong\u003e Each package of the Sierra 18-7130 contains a single O-ring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-7130 O-ring made from?\u003c\/strong\u003e It is molded from black rubber, suited to sealing applications exposed to marine fuel, oil, and water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-7130 a genuine OMC part or an aftermarket replacement?\u003c\/strong\u003e The 18-7130 is a Sierra aftermarket replacement, manufactured to meet or exceed the specifications of the original OMC O-ring it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if I need to replace this O-ring?\u003c\/strong\u003e A hardened, cracked, or flattened O-ring at this location will lose its seal; if you see oil, fuel, or water seepage at the mating surface, the 18-7130 O-ring should be replaced.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7130 come with installation instructions or a gasket kit?\u003c\/strong\u003e No, the package contains only the O-ring itself, with no gasket kit or instructions included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7130 O-ring weigh?\u003c\/strong\u003e It weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-7130 O-ring in a different location than OMC 314728 if the dimensions match?\u003c\/strong\u003e The 18-7130 is sized at 2.125 inches I.D. By 0.100 inches width; as long as those dimensions match the O-ring being replaced, it can be used, but always verify fit against your original part first.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988364177627,"sku":"SIE-18-7130","price":1.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-7130__13314.1722514297.500.750.jpg?v=1785188953","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-7130-o-ring-for-omc-cobra-sterndrive-bearing-housing-replaces-omc-314728-354731-2-125-in-id-rubber-o-ring","provider":"Good Vibes Marina","version":"1.0","type":"link"}