{"product_id":"sierra-18-3836-head-gasket-for-johnson-evinrude-outboards-replaces-oem-329836","title":"Sierra 18-3836 Head Gasket for Johnson\/Evinrude 65 HP Commercial Outboards, 1987-95","description":"\u003cp\u003eThe Sierra 18-3836 head gasket is a replacement power head gasket engineered for Johnson and Evinrude outboard applications, specifically the 65 HP Commercial model built 1987-95. This gasket forms the critical seal between the cylinder block and cylinder head, preventing compression loss and coolant or combustion leaks that can lead to overheating or power head failure. It is manufactured from glass gasket material with a white finish, chosen for its ability to withstand the repeated heat cycling and vibration of marine two-stroke outboard operation while maintaining a durable, long-lasting seal.\u003c\/p\u003e\u003cp\u003eEach package includes one gasket, sized and shaped specifically for the 65 HP Commercial power head, so no trimming or modification is required during installation. Sierra engineers this gasket to meet or exceed the performance of the original equipment part it replaces, making it a reliable choice when rebuilding or servicing the power head. It is designed as a direct fit for the listed application and is cross-referenced to common OEM and aftermarket part numbers for easy identification when ordering.\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 18-3836\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Glass\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\u003eWeight:\u003c\/strong\u003e 0.17 pounds\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\u003eUPC:\u003c\/strong\u003e 030999316875\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 65 HP Commercial outboards, 1987-95\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 34280\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude Outboard 329836\u003c\/li\u003e\n\u003cli\u003eMallory 9-63821\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards does the Sierra 18-3836 head gasket fit?\u003c\/strong\u003e The 18-3836 is designed for Johnson\/Evinrude 65 HP Commercial outboards built 1987-95.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3836 an OEM head gasket or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra aftermarket head gasket engineered to meet or exceed the performance of the original equipment part it replaces on the 65 HP Commercial Johnson\/Evinrude power head.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-3836 cross-reference?\u003c\/strong\u003e This gasket is interchangeable with GLM 34280, Johnson\/Evinrude Outboard 329836, and Mallory 9-63821.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in one package?\u003c\/strong\u003e Each package of the 18-3836 contains one head gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3836 head gasket made from?\u003c\/strong\u003e It is made from glass gasket material with a white finish, chosen for durability under the heat and vibration of outboard operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape is the Sierra 18-3836 gasket?\u003c\/strong\u003e The 18-3836 is a round head gasket sized specifically for the 65 HP Commercial Johnson\/Evinrude power head.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3836 head gasket weigh?\u003c\/strong\u003e The 18-3836 weighs 0.17 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to modify or trim the 18-3836 before installing it?\u003c\/strong\u003e No, the 18-3836 is sized to fit the 65 HP Commercial power head directly, so no trimming or modification is needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-3836 fit a 65 Jet model Johnson\/Evinrude outboard?\u003c\/strong\u003e No, the 18-3836 is specified for the 65 HP Commercial application; the 65 Jet application uses a different Sierra part number, so confirm your engine model before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this gasket seal?\u003c\/strong\u003e The 18-3836 seals the joint between the cylinder block and cylinder head on the power head, preventing compression, coolant, or combustion leaks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3836?\u003c\/strong\u003e The UPC for the Sierra 18-3836 head gasket is 030999316875.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988165996763,"sku":"SIE-18-3836","price":31.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3836_lg__94068.1558126982.500.750.jpg?v=1785188915","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3836-head-gasket-for-johnson-evinrude-outboards-replaces-oem-329836","provider":"Good Vibes Marina","version":"1.0","type":"link"}