{"product_id":"sierra-18-0645-reed-plate-gasket-for-mercury-mariner-outboard-replaces-oem-27-14697-2","title":"Sierra 18-0645 Adapter Plate Gasket for Mercury\/Mariner Outboard Motors, White","description":"\u003cp\u003eThe Sierra 18-0645 Adapter Plate Gasket is a replacement gasket engineered for Mercury and Mariner outboard motors. It seals the adapter plate joint on the powerhead, helping maintain a proper seal against water and combustion gases so the engine runs as designed. The gasket is manufactured to OEM specifications, meaning it is built to meet or exceed the performance of the original equipment part it replaces, giving boat owners a dependable option when servicing the adapter plate area during a rebuild, tune-up, or routine maintenance.\u003c\/p\u003e\u003cp\u003eFinished in white and featuring a round profile to match the adapter plate mounting pattern, this gasket is designed for a straightforward, direct-fit installation without modification. Sierra builds this part to stand up to the demanding conditions of the marine environment, including exposure to fuel, oil, heat, and moisture, so it holds its seal over time. As a fit type listed as universal for Mercury\/Mariner outboard applications, it is a practical replacement part to keep on hand for outboard maintenance and repair work.\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 18-0645\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e OEM\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\u003eFit Type:\u003c\/strong\u003e Universal Fit for Mercury\/Mariner outboard motors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.07 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282242831\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury\/Mariner outboard motors (universal fit)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-0645 gasket used for?\u003c\/strong\u003e It is an adapter plate gasket that seals the adapter plate joint on Mercury and Mariner outboard motors, helping maintain a proper seal during engine operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-0645 gasket fit all Mercury and Mariner outboards?\u003c\/strong\u003e It is listed as a universal fit for Mercury\/Mariner outboard motors rather than being restricted to one specific model or year range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-0645 adapter plate gasket?\u003c\/strong\u003e The gasket is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape is the Sierra 18-0645 gasket?\u003c\/strong\u003e It has a round shape, matching the adapter plate mounting pattern it is designed to seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-0645 gasket weigh?\u003c\/strong\u003e The Sierra 18-0645 adapter plate gasket weighs 0.07 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0645 gasket an OEM part or aftermarket?\u003c\/strong\u003e It is an aftermarket gasket manufactured to OEM specifications, meaning it is built to meet or exceed the performance of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-0645 gasket made from?\u003c\/strong\u003e It is made to OEM material specifications for the adapter plate application on Mercury\/Mariner outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install the 18-0645 gasket myself?\u003c\/strong\u003e Yes, it is designed as a direct-fit replacement for the adapter plate joint, suitable for use during a standard powerhead service or rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order part number 18-0645?\u003c\/strong\u003e The order includes one Sierra adapter plate gasket, part number 18-0645.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose the Sierra 18-0645 over a generic gasket?\u003c\/strong\u003e Sierra manufactures the 18-0645 to meet or exceed the specifications of the original equipment part, offering a dependable seal for the marine environment rather than a generic substitute.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988084371675,"sku":"SIE-18-0645","price":9.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0645_lg__06291.1558120251.500.750.jpg?v=1785188089","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-0645-reed-plate-gasket-for-mercury-mariner-outboard-replaces-oem-27-14697-2","provider":"Good Vibes Marina","version":"1.0","type":"link"}