{"product_id":"sierra-18-2952-head-gasket-replaces-omc-203034-for-johnson-evinrude-7-5-hp-outboard-1957-1958","title":"Sierra 18-2952 Head Gasket, Replaces 203034, for Johnson\/Evinrude 7.5 HP (1957-1958) Outboard Motors","description":"\u003cp\u003eThe Sierra 18-2952 Head Gasket is a replacement head gasket engineered for Johnson\/Evinrude 7.5 HP outboard motors from 1957-1958. It seals the cylinder head to the powerhead block, maintaining proper compression and preventing coolant or combustion leaks between mating surfaces. This gasket is a direct interchange for the OEM Johnson\/Evinrude part number 203034, making it a straightforward replacement when rebuilding or servicing the powerhead.\u003c\/p\u003e\u003cp\u003eSierra manufactures this gasket to meet or exceed the specifications of the original equipment part it replaces, so fit and sealing performance match what the engine was designed around. It is sold as a single unit and is lightweight at 0.05 pounds, consistent with a compact 7.5 HP powerhead application. As with all Sierra parts, it is backed by Sierra's standard customer satisfaction warranty.\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 18-2952\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Head Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999314529\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 7.5 HP (1957-1958)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e203034\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-2952 head gasket fit?\u003c\/strong\u003e This head gasket is designed for Johnson\/Evinrude 7.5 HP outboard motors from 1957-1958.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2952 replace OEM part 203034?\u003c\/strong\u003e Yes, Sierra 18-2952 is a direct interchange for Johnson\/Evinrude OEM number 203034.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2952 head gasket weigh?\u003c\/strong\u003e It weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package?\u003c\/strong\u003e The 18-2952 is sold as a single unit, a unit count of 1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2952 an OEM part or aftermarket?\u003c\/strong\u003e It is an aftermarket Sierra-manufactured gasket built to meet or exceed the original equipment part it replaces, OEM number 203034.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the function of the 18-2952 head gasket?\u003c\/strong\u003e It seals the cylinder head to the engine block on the applicable Johnson\/Evinrude 7.5 HP powerhead, maintaining compression and preventing leaks between the mating surfaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2952 gasket covered by a warranty?\u003c\/strong\u003e Yes, Sierra 18-2952 is covered under Sierra's standard customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2952 head gasket?\u003c\/strong\u003e The UPC is 030999314529.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-2952 fit other Johnson\/Evinrude horsepower models besides the 7.5 HP?\u003c\/strong\u003e The 18-2952 is specified for Johnson\/Evinrude 7.5 HP (1957-1958) outboards; no other horsepower or year applications are listed for this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-2952 different from similar Sierra head gaskets like 18-2951 or 18-2954?\u003c\/strong\u003e Each of these Sierra head gasket part numbers replaces a different OEM number, so 18-2952 (replacing 203034) is not interchangeable with 18-2951 or 18-2954, which cover different OEM equivalents.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988135456987,"sku":"SIE-18-2952","price":16.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2952_lg__37144.1558124966.500.750.jpg?v=1785189121","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2952-head-gasket-replaces-omc-203034-for-johnson-evinrude-7-5-hp-outboard-1957-1958","provider":"Good Vibes Marina","version":"1.0","type":"link"}