{"product_id":"sierra-18-2873-9-water-jacket-gasket-replaces-oem-318334-fits-v-4-johnson-evinrude-outboards-pack-of-2","title":"Sierra 18-2873-9 Water Jacket Gasket, Replaces 318335, V-4 Johnson\/Evinrude Outboard, Pack of 2","description":"\u003cp\u003eThe Sierra 18-2873-9 Water Jacket Gasket seals the water jacket on V-4 Johnson and Evinrude outboard engines, sitting between the powerhead and cylinder block to maintain the cooling water passage and prevent leaks at this joint. It is sold as a pack of 2, giving you a spare or enough material for both a repair and a future service without a second purchase. The gasket is black in color and is designed as a direct fit for the water jacket location on applicable V-4 Johnson and Evinrude outboards, replacing the original equipment gasket bearing part number 318335.\u003c\/p\u003e\u003cp\u003eThis is a maintenance-grade sealing component intended for use during powerhead service, cylinder block reassembly, or when addressing a water jacket leak. Because it is packaged in a set of 2, it also suits shops or owners servicing more than one engine, or who want a gasket on hand for the next teardown.\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 18-2873-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Jacket Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 2 gaskets per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e V-4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.26 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282163785\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eV-4 Johnson and Evinrude outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e318335\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-2873-9 water jacket gasket fit?\u003c\/strong\u003e The 18-2873-9 is designed for V-4 Johnson and Evinrude outboard engines, sealing the water jacket between the powerhead and cylinder block.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does this gasket replace?\u003c\/strong\u003e It replaces original equipment part number 318335 on applicable V-4 Johnson and Evinrude outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package of 18-2873-9?\u003c\/strong\u003e Each package contains 2 water jacket gaskets, so you get a spare or enough for a repeat service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2873-9 gasket?\u003c\/strong\u003e It is black, matching the appearance of the original water jacket gasket it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2873-9 water jacket gasket weigh?\u003c\/strong\u003e The Sierra 18-2873-9, packaged as a set of 2, weighs 0.26 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2873-9 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is an aftermarket replacement gasket manufactured by Sierra to fit in place of the original 318335 water jacket gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to replace the water jacket gasket on my outboard?\u003c\/strong\u003e This gasket is typically replaced during powerhead service or cylinder block reassembly, or if a water jacket leak develops on a V-4 Johnson or Evinrude outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2873-9 come with any other gaskets or hardware?\u003c\/strong\u003e The package includes only the 2 water jacket gaskets identified by part number 18-2873-9; no additional hardware is included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-2873-9 gasket on both Johnson and Evinrude engines?\u003c\/strong\u003e Yes, the Sierra 18-2873-9 is made to fit V-4 Johnson and Evinrude outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2873-9 water jacket gasket?\u003c\/strong\u003e The UPC for this pack of 2 gaskets is 808282163785.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988132606171,"sku":"SIE-18-2873-9","price":7.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/sierra_lg_1271__19886.1558123208.500.750.jpg?v=1785188131","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2873-9-water-jacket-gasket-replaces-oem-318334-fits-v-4-johnson-evinrude-outboards-pack-of-2","provider":"Good Vibes Marina","version":"1.0","type":"link"}