{"product_id":"biglknm-primary-cover-gasket-kit-for-sportster-883-1200-1991-2003-metal-foam-gasket-nbr-seals-leak-free","title":"BIGLKNM Primary Cover Gasket Kit for Sportster 883\/1200 (1991–2003) — Metal foam gasket \u0026 NBR seals, leak-free","description":"\u003cstrong\u003eBIGLKNM Primary Cover Gasket Seal Kit is a complete replacement set of gaskets, seals, and O-ring engineered to restore a leak-free primary\/clutch cover on compatible Harley Sportster models.\u003c\/strong\u003e\n\n\u003cp\u003eThis kit supplies the precise sealing components riders need when removing or servicing the primary cover on Sportster engines. Made from a durable metal foam board gasket plus NBR seals and O-ring, the components resist heat and oil exposure typical of motorcycle drivetrains. The set is sized for a range of XL and XLH Sportster years, offering a straightforward way to stop oil seepage and preserve clutch operation after maintenance or repair.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Sportster models will this gasket kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis kit was designed to match common primary cover dimensions across many Sportster model years. Verify the part shapes and bolt locations against your cover before purchasing to ensure correct fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 1996–2003 Sportster 1200 Custom (XL1200C) and 1200 Sport (XL1200S)\u003c\/li\u003e\n  \u003cli\u003eFits 1999–2003 Sportster 883 Custom (XL883C) and 2002–2003 883 Roadster (XL883R)\u003c\/li\u003e\n  \u003cli\u003eFits 1991–2003 XLH1200 and XLH883 plus 1991–1995 XLH883DLX and XLH883HUG variants\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials are used and why do they matter?\u003c\/h3\u003e\n\u003cp\u003eThe primary gasket is cut from a metal foam board and the seals and O-ring are molded from NBR (nitrile rubber). These choices balance durability and resistance to the heat and oils found in motorcycle primary cases.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMetal foam gasket resists deformation and maintains shape under bolt torque\u003c\/li\u003e\n  \u003cli\u003eNBR seals provide reliable oil resistance and temperature tolerance for drivetrain use\u003c\/li\u003e\n  \u003cli\u003eLightweight components reduce installation difficulty while retaining sealing performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this kit help during maintenance or repair?\u003c\/h3\u003e\n\u003cp\u003eWhen you remove the primary cover for clutch, chain, or inspection work, old gaskets and seals often lose compression and let oil seep out. Replacing them restores a proper seal, reduces post-service leaks, and helps maintain clean, safe operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplace after primary cover removal to prevent leaks when reassembled\u003c\/li\u003e\n  \u003cli\u003eStops oil seepage that can foul belts or clutch plates\u003c\/li\u003e\n  \u003cli\u003eSupports consistent clutch cover pressure and longer service intervals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included and any installation notes?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains the main primary gasket plus the necessary seals and an O-ring as shown in the product images. Clean mating surfaces thoroughly and follow correct torque specs to avoid overtightening and ensure a reliable seal.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMain primary gasket shaped for Sportster covers\u003c\/li\u003e\n  \u003cli\u003eMultiple NBR seals and a replacement O-ring for shaft or cover openings\u003c\/li\u003e\n  \u003cli\u003eCheck fit against your cover and use recommended torque sequence when reinstalling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This gasket and seal kit is aimed at Sportster owners, home mechanics, and professional shops performing primary cover or clutch service on compatible Harley-Davidson Sportster models. It’s a practical purchase for anyone rebuilding the primary, replacing worn seals, or preventing oil leaks after routine maintenance.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this kit stop a leaking primary cover?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If the leak is due to worn or damaged gaskets and seals, replacing them with this kit should stop the leak when correctly installed and torqued.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need additional parts to install the kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Generally no—this kit includes the main gasket and seals. Clean mating surfaces and use proper bolts; replace any damaged fasteners separately.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BIGLKNM","offers":[{"title":"Default Title","offer_id":48085881946270,"sku":"B0D1CCWMG9","price":48.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/biglknm-primary-gasket-front-view.jpg?v=1785879286","url":"https:\/\/northtrailauto.ca\/products\/biglknm-primary-cover-gasket-kit-for-sportster-883-1200-1991-2003-metal-foam-gasket-nbr-seals-leak-free","provider":"North Trail Auto","version":"1.0","type":"link"}