{"product_id":"sierra-18-2885-head-gasket-for-evinrude-outboard-replaces-oem-315539","title":"Sierra Head Gasket 18-2885, Replaces 303438, for Evinrude Outboard Power Heads","description":"\u003cp\u003eThe Sierra Head Gasket 18-2885 is a power head gasket engineered for Evinrude outboard engines. It seals the mating surface between the cylinder block and cylinder head, maintaining proper compression and preventing coolant or combustion leaks at the power head. This gasket is a direct equivalent for OEM part number 303438, making it a straightforward replacement when rebuilding or servicing an Evinrude outboard power head.\u003c\/p\u003e\u003cp\u003eEach gasket is sold as a single unit and is part of Sierra's line of Evinrude outboard power head gaskets, a category built around exact-fit sealing components for outboard engine rebuilds. Installing a proper power head gasket is a key step in restoring compression and preventing leaks after a head has been removed for service, inspection, or repair.\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 18-2885\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Power Head Gaskets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.14 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999313928\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 303438\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Evinrude outboard power heads.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e303438\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does Sierra part number 18-2885 fit?\u003c\/strong\u003e Sierra 18-2885 is a head gasket for Evinrude outboard power heads, used when resealing the cylinder head to the cylinder block.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-2885 the same as OEM part 303438?\u003c\/strong\u003e Yes, Sierra 18-2885 directly replaces OEM number 303438, so it can be installed in place of that original part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package of 18-2885?\u003c\/strong\u003e One gasket is included per package for Sierra part number 18-2885.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2885 head gasket weigh?\u003c\/strong\u003e The Sierra 18-2885 head gasket weighs 0.14 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for Sierra 18-2885?\u003c\/strong\u003e The UPC for this head gasket is 030999313928.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should a power head gasket like 18-2885 be replaced?\u003c\/strong\u003e A power head gasket such as the Sierra 18-2885 should be replaced any time the cylinder head is removed from an Evinrude outboard power head, or if compression loss or leakage is found at the head-to-block joint.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or aftermarket?\u003c\/strong\u003e Sierra 18-2885 is manufactured by Sierra as a replacement gasket engineered to match the fit and sealing performance of OEM part 303438.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2885 gasket require any additional sealant?\u003c\/strong\u003e The dossier does not specify sealant requirements for the Sierra 18-2885 head gasket, so follow the engine manufacturer's service procedure for the power head being resealed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engine brand is the 18-2885 gasket designed for?\u003c\/strong\u003e The Sierra 18-2885 head gasket is categorized specifically for Evinrude outboard power heads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I reuse an old head gasket instead of buying 18-2885?\u003c\/strong\u003e Head gaskets like the Sierra 18-2885 are designed for one-time use and should be replaced with a new gasket, such as this one, whenever the head is removed.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988132704475,"sku":"SIE-18-2885","price":7.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2885_lg__67776.1558124573.500.750.jpg?v=1785188612","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2885-head-gasket-for-evinrude-outboard-replaces-oem-315539","provider":"Good Vibes Marina","version":"1.0","type":"link"}