{"product_id":"326468-gasket-powerhead-mounting-for-johnson-evinrude-40hp-48hp-50hp-55hp-60hp-jlm-marine","title":"326468 Gasket Powerhead Mounting for Johnson Evinrude 40HP 48HP 50HP 55HP 60HP | JLM Marine","description":"\u003ch2\u003e326468 Gasket Powerhead Mounting for Johnson Evinrude 40HP 48HP 50HP 55HP 60HP\u003c\/h2\u003e\n\n\u003cp\u003eThis powerhead base gasket is engineered for \u003cstrong\u003eJohnson\/Evinrude 2-cylinder outboard motors rated 40–60 HP\u003c\/strong\u003e, covering both traditional Looper models (1976–2005) and modern E-TEC engines (2003–2016). It ensures a reliable seal between the powerhead and the lower unit, preventing water intrusion and maintaining optimal compression.\u003c\/p\u003e\n\n\u003cp\u003eThis aftermarket gasket directly replaces OEM part numbers \u003cstrong\u003e0315852, 0321510, 0326468, and 0351018\u003c\/strong\u003e, offering broad compatibility across multiple model years and configurations. It is designed to meet OEM specifications for fit and durability.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eFits both \u003cstrong\u003e3.187\" bore Looper\u003c\/strong\u003e and \u003cstrong\u003e3.600\" bore E-TEC\u003c\/strong\u003e engines\u003c\/li\u003e\n\u003cli\u003eDirect replacement for multiple Johnson\/Evinrude OEM gasket part numbers\u003c\/li\u003e\n\u003cli\u003eEssential component for powerhead removal and reinstallation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket sources:\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude OEM\u003c\/td\u003e\n\u003ctd\u003e326468\u003c\/td\u003e\n\u003ctd\u003ePrimary OEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude OEM\u003c\/td\u003e\n\u003ctd\u003e0315852\u003c\/td\u003e\n\u003ctd\u003eSuperseded variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude OEM\u003c\/td\u003e\n\u003ctd\u003e0321510\u003c\/td\u003e\n\u003ctd\u003eSuperseded variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude OEM\u003c\/td\u003e\n\u003ctd\u003e0326468\u003c\/td\u003e\n\u003ctd\u003eSuperseded variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude OEM\u003c\/td\u003e\n\u003ctd\u003e0351018\u003c\/td\u003e\n\u003ctd\u003eSuperseded variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAftermarket\u003c\/td\u003e\n\u003ctd\u003e510-03\u003c\/td\u003e\n\u003ctd\u003eCommon aftermarket reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Johnson\/Evinrude owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/johnson-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eJohnson\/Evinrude Serial Number Guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eBore Size\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e2 Cyl Looper\u003c\/td\u003e\n\u003ctd\u003e40 HP\u003c\/td\u003e\n\u003ctd\u003e3.187\" Bore\u003c\/td\u003e\n\u003ctd\u003e1989–2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e2 Cyl Looper\u003c\/td\u003e\n\u003ctd\u003e48 HP\u003c\/td\u003e\n\u003ctd\u003e3.187\" Bore\u003c\/td\u003e\n\u003ctd\u003e1989–1996\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e2 Cyl Looper\u003c\/td\u003e\n\u003ctd\u003e50 HP\u003c\/td\u003e\n\u003ctd\u003e3.187\" Bore\u003c\/td\u003e\n\u003ctd\u003e1979–1983, 1989–2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e2 Cyl Looper\u003c\/td\u003e\n\u003ctd\u003e55 HP\u003c\/td\u003e\n\u003ctd\u003e3.187\" Bore\u003c\/td\u003e\n\u003ctd\u003e1976–1981\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e2 Cyl Looper\u003c\/td\u003e\n\u003ctd\u003e60 HP\u003c\/td\u003e\n\u003ctd\u003e3.187\" Bore\u003c\/td\u003e\n\u003ctd\u003e1980–1983\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e2 Cyl E-TEC\u003c\/td\u003e\n\u003ctd\u003e40 HP\u003c\/td\u003e\n\u003ctd\u003e3.600\" Bore\u003c\/td\u003e\n\u003ctd\u003e2004–2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e2 Cyl E-TEC\u003c\/td\u003e\n\u003ctd\u003e50 HP\u003c\/td\u003e\n\u003ctd\u003e3.600\" Bore\u003c\/td\u003e\n\u003ctd\u003e2004–2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e2 Cyl E-TEC\u003c\/td\u003e\n\u003ctd\u003e55 HP\u003c\/td\u003e\n\u003ctd\u003e3.600\" Bore\u003c\/td\u003e\n\u003ctd\u003e2008\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e2 Cyl E-TEC\u003c\/td\u003e\n\u003ctd\u003e60 HP\u003c\/td\u003e\n\u003ctd\u003e3.600\" Bore\u003c\/td\u003e\n\u003ctd\u003e2005–2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e2 Cyl\u003c\/td\u003e\n\u003ctd\u003e55 HP\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e2003–2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e326468\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperseded Part Numbers\u003c\/td\u003e\n\u003ctd\u003e0315852, 0321510, 0326468, 0351018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAftermarket Reference\u003c\/td\u003e\n\u003ctd\u003e510-03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePowerhead base gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Brands\u003c\/td\u003e\n\u003ctd\u003eJohnson, Evinrude\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower Range\u003c\/td\u003e\n\u003ctd\u003e40–60 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Configuration\u003c\/td\u003e\n\u003ctd\u003e2-Cylinder (Looper \u0026amp; E-TEC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBore Sizes\u003c\/td\u003e\n\u003ctd\u003e3.187\" and 3.600\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Years\u003c\/td\u003e\n\u003ctd\u003e1976–2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eYour purchase includes:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Powerhead Base Gasket (OEM #326468)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the battery\u003c\/strong\u003e and ensure the engine is cool before beginning work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove the engine cover\u003c\/strong\u003e and disconnect fuel lines, electrical connections, and control cables from the powerhead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnbolt the powerhead mounting bolts\u003c\/strong\u003e securing the powerhead to the exhaust housing or mid-section. Keep track of bolt locations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarefully lift the powerhead assembly\u003c\/strong\u003e off the lower unit, using assistance if needed due to weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove the old base gasket\u003c\/strong\u003e from both mating surfaces, scraping away all remnants and sealant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean both surfaces thoroughly\u003c\/strong\u003e with a gasket scraper and solvent to ensure no debris or old gasket material remains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect mating surfaces\u003c\/strong\u003e for warping, corrosion, or damage that may compromise the seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the new gasket\u003c\/strong\u003e on the lower mounting surface, aligning all bolt holes and water passages precisely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarefully lower the powerhead\u003c\/strong\u003e onto the new gasket, ensuring it seats evenly without shifting the gasket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall mounting bolts\u003c\/strong\u003e hand-tight first, then torque to manufacturer specifications in a cross-pattern sequence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect all fuel lines, electrical connectors, and control cables\u003c\/strong\u003e in reverse order of removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure-test the cooling system\u003c\/strong\u003e (if applicable) and run the engine to verify proper sealing and operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this gasket fits my specific engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine's model, horsepower, bore size, and year with the compatibility table above. You can also verify your engine serial number using the Johnson\/Evinrude serial number guide linked in the compatibility section, or check your engine's parts diagram for OEM part numbers 0315852, 0321510, 0326468, or 0351018.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: When should I replace the powerhead base gasket?\u003c\/strong\u003e\u003cbr\u003e\nA: Replace this gasket any time you remove the powerhead for service, repairs, or rebuild. Signs of a failing gasket include water leaking from the powerhead-to-exhaust housing junction, overheating, loss of cooling water flow, or visible gasket deterioration during inspection.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the old gasket if it looks intact?\u003c\/strong\u003e\u003cbr\u003e\nA: No, gaskets are designed for single use. Reusing an old gasket—even if it appears undamaged—can result in improper sealing, water intrusion, and potential engine damage. Always install a new gasket when reassembling the powerhead.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Will this aftermarket gasket perform the same as the OEM version?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this gasket is manufactured to OEM specifications using comparable-grade materials. It provides the same sealing performance, heat resistance, and durability as the original Johnson\/Evinrude part.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to use sealant with this gasket?\u003c\/strong\u003e\u003cbr\u003e\nA: Consult your engine's service manual. Some applications require a thin coat of gasket sealant on both sides, while others use the gasket dry. Incorrect use of sealant can cause blockages in water passages or compromise the seal.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between OEM and aftermarket parts?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51981020660025,"sku":"24GK479","price":20.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Afdf4738b5e0e44ce9bbfe7c0408fb5db4.webp?v=1772448684","url":"https:\/\/jlmmarine.com\/ru\/products\/326468-gasket-powerhead-mounting-for-johnson-evinrude-40hp-48hp-50hp-55hp-60hp-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}