{"product_id":"sierra-18-2961-marine-head-gasket-replaces-oem-329103-for-johnson-evinrude-6-hp-outboards-1960-1979","title":"Sierra 18-2961 Head Gasket for Johnson\/Evinrude 6 HP Outboard, 1965-79","description":"\u003cp\u003eThe Sierra 18-2961 Head Gasket is a replacement head gasket engineered for Johnson and Evinrude 6 HP outboard motors from 1965-79. It seats between the cylinder head and the power head to seal the combustion chamber and coolant passages, maintaining proper compression and preventing coolant or exhaust leaks at the head joint. This gasket is a direct fit for the specified 6 HP Johnson\/Evinrude application and is built to meet or exceed the performance of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003eInstallation is a standard head-gasket swap performed whenever the power head is removed for service, such as during a top-end rebuild or when addressing a compression or coolant leak. Using a properly fitted, correctly specified gasket like the 18-2961 helps ensure a reliable seal and consistent engine performance after reassembly.\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 18-2961\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Head Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.08 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999314604\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Johnson\/Evinrude 6 HP outboard, 1965-79\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 33830, Johnson\/Evinrude 306204, 329103\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 6 HP outboard motors, 1965-79\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 33830\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 306204\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 329103\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engine does the Sierra 18-2961 head gasket fit?\u003c\/strong\u003e The Sierra 18-2961 is designed for Johnson and Evinrude 6 HP outboard motors from 1965-79.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2961 gasket interchangeable with any OEM numbers?\u003c\/strong\u003e Yes, the Sierra 18-2961 is interchangeable with GLM 33830 and Johnson\/Evinrude Outboard numbers 306204 and 329103.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2961 head gasket weigh?\u003c\/strong\u003e The Sierra 18-2961 Head Gasket weighs 0.08 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2961 head gasket?\u003c\/strong\u003e It is white, consistent with the finish Sierra uses for this head gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-2961 is a genuine Sierra replacement part, manufactured to meet or exceed the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-2961 work on a 6 HP Johnson or Evinrude built after 1979?\u003c\/strong\u003e No, the Sierra 18-2961 is specified for 6 HP Johnson\/Evinrude outboards from 1965-79; later 6 HP models use a different Sierra part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this head gasket be replaced?\u003c\/strong\u003e The 18-2961 should be replaced any time the power head is removed for service on a 6 HP Johnson\/Evinrude, 1965-79, such as during a top-end rebuild or when a compression or coolant leak is present at the head joint.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the Sierra 18-2961?\u003c\/strong\u003e The product includes one Sierra 18-2961 Head Gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2961 come with a warranty?\u003c\/strong\u003e Yes, the Sierra 18-2961 Head Gasket is covered by a limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with the Sierra 18-2961?\u003c\/strong\u003e The Sierra 18-2961 Head Gasket carries UPC 030999314604.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988135522523,"sku":"SIE-18-2961","price":17.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2961_lg__59806.1558125501.500.750.jpg?v=1785189034","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2961-marine-head-gasket-replaces-oem-329103-for-johnson-evinrude-6-hp-outboards-1960-1979","provider":"Good Vibes Marina","version":"1.0","type":"link"}