{"product_id":"sierra-18-29451-9-drain-screw-gasket-50-pack-for-honda-bf8-bf9-9-outboards-fits-18-2244-drain-screw","title":"Sierra 18-29451-9 Drain Screw Gasket, 50-Pack, Replaces 12-20260, F8077, F8186, for Lower Units and Sea Water Pumps","description":"\u003cp\u003eThe Sierra 18-29451-9 Drain Screw Gasket is a replacement sealing gasket sold in a pack of 50, designed for use with Sierra's 18-2944 Drain Screw. It is used in most lower units and sea water pumps, where it seals the drain screw against water and gear lube leakage during service and maintenance. The gasket is round in shape, finished in white, and built with marine grade materials to withstand exposure to water and lubricants inside the lower unit and pump housing. Because drain and fill screws are removed routinely during gear lube changes and winterization, the gasket underneath should be replaced each time rather than reused, and having a 50-count pack on hand means a fresh gasket is always available for the next service interval. This part is cataloged as a Johnson Outboard Gasket Set item, reflecting its common use across Johnson-family lower unit and pump service. Always confirm the drain screw and housing dimensions on your unit match before installing, since gaskets are sized to a specific screw.\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 18-29451-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Drain Screw Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 50 gaskets per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Marine grade material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.5 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned For Use With:\u003c\/strong\u003e Sierra 18-2944 Drain Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Used in most lower units and sea water pumps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Johnson Outboard Gasket Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282180362\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eUsed in most lower units and sea water pumps; designed for use with the Sierra 18-2944 Drain Screw\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e12-20260\u003c\/li\u003e\n\u003cli\u003e12-19183\u003c\/li\u003e\n\u003cli\u003e12-191832\u003c\/li\u003e\n\u003cli\u003e12-191833\u003c\/li\u003e\n\u003cli\u003eF50556\u003c\/li\u003e\n\u003cli\u003eF8077\u003c\/li\u003e\n\u003cli\u003eF8186\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-29451-9 gasket used for?\u003c\/strong\u003e It is a drain screw gasket used in most lower units and sea water pumps, sealing the drain screw threads to prevent leaks after service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a pack?\u003c\/strong\u003e The 18-29451-9 pack contains 50 drain screw gaskets, enough for many service intervals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich drain screw does this gasket fit?\u003c\/strong\u003e This gasket is designed for use with Sierra's 18-2944 Drain Screw.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-29451-9 gasket replace?\u003c\/strong\u003e It replaces OEM numbers 12-20260, 12-19183, 12-191832, 12-191833, F50556, F8077, and F8186.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the gasket made from?\u003c\/strong\u003e The Sierra 18-29451-9 gasket is built with marine grade material suited to sealing against water and gear lube exposure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and shape is this gasket?\u003c\/strong\u003e It is round in shape and white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does a pack weigh?\u003c\/strong\u003e A pack of 50 Sierra 18-29451-9 gaskets weighs 0.5 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould the drain screw gasket be reused after removing the drain screw?\u003c\/strong\u003e No; a new gasket should be installed each time the drain screw is removed, which is why the 18-29451-9 is sold in a 50-pack for repeated service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part?\u003c\/strong\u003e Yes, part number 18-29451-9 is a genuine Sierra drain screw gasket, not a generic aftermarket substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the package?\u003c\/strong\u003e The package includes 50 drain screw gaskets and nothing else; the drain screw itself (18-2944) is sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this gasket fit any lower unit or sea water pump?\u003c\/strong\u003e The 18-29451-9 gasket is used in most lower units and sea water pumps, but fit should be confirmed against your specific drain screw before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988135260379,"sku":"SIE-18-29451-9","price":44.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Sierra_18-29451-9_Drain_Screw_Gasket_50Pk__90465.1558336162.500.750.jpg?v=1785188391","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-29451-9-drain-screw-gasket-50-pack-for-honda-bf8-bf9-9-outboards-fits-18-2244-drain-screw","provider":"Good Vibes Marina","version":"1.0","type":"link"}