{"product_id":"sierra-18-2557-9-impeller-gasket-2-pack-replaces-oem-332108-fits-3-cylinder-evinrude-johnson-outboards","title":"Sierra 18-2557-9 Impeller Gasket - Replaces 332108 - Fits 3 Cylinder Outboards - Pack of 2","description":"\u003cp\u003eThe Sierra 18-2557-9 Impeller Gasket is a replacement gasket engineered to seal the water pump impeller housing on 3 cylinder outboard engines. Sold as a pack of 2, it gives you a spare on hand for the next service interval or lets you replace both gaskets in a two-pump job without ordering twice. Each gasket measures 0.25 inches in thickness, matching the original equipment specification so the impeller housing seats correctly and maintains proper cooling water flow.\u003c\/p\u003e\u003cp\u003eThis gasket is manufactured to meet or exceed the quality of the original equipment part it replaces, helping prevent water intrusion and pump housing leaks that can lead to overheating. It is a straightforward, inexpensive part to swap during a routine impeller replacement or whenever the water pump housing is opened up for inspection.\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 18-2557-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e Pack of 2 gaskets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Thickness:\u003c\/strong\u003e 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282162917\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 3 cylinder outboard engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 332108\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e3 cylinder outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e332108\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2557-9 impeller gasket fit?\u003c\/strong\u003e This gasket is designed for 3 cylinder outboard engines and seals the water pump impeller housing on that engine family.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a pack?\u003c\/strong\u003e The 18-2557-9 is sold as a pack of 2 gaskets, giving you a spare or enough for two separate installations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-2557-9 replace?\u003c\/strong\u003e It replaces OEM part number 332108, so it can be used as a direct equivalent for that reference number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow thick is the 18-2557-9 gasket?\u003c\/strong\u003e Each gasket measures 0.25 inches thick, matching the original specification for a proper seal against the impeller housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2557-9 weigh?\u003c\/strong\u003e The pack weighs 0.02 pounds, reflecting the lightweight nature of a thin gasket set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The Sierra 18-2557-9 is an aftermarket gasket manufactured to meet or exceed the quality of the original equipment part it replaces, OEM number 332108.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace this gasket?\u003c\/strong\u003e Replace the 18-2557-9 gasket any time the water pump impeller housing is opened for an impeller swap or inspection, since a reused gasket can leak.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this product?\u003c\/strong\u003e The UPC for the Sierra 18-2557-9 impeller gasket pack is 808282162917.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this gasket on a V-6 or V-8 engine?\u003c\/strong\u003e No, the 18-2557-9 is specified for 3 cylinder outboard engines only; V-4, V-6, and V-8 applications use a different Sierra gasket part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the package?\u003c\/strong\u003e The package contains 2 impeller gaskets, part number 18-2557-9, with no additional hardware included.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107604187,"sku":"SIE-18-2557-9","price":5.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2557-9__12978.1737834215.500.750.jpg?v=1785188005","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2557-9-impeller-gasket-2-pack-replaces-oem-332108-fits-3-cylinder-evinrude-johnson-outboards","provider":"Good Vibes Marina","version":"1.0","type":"link"}