{"product_id":"kpmi-valve-stem-seal-4-pk-hd-evolution-1987-1999-191-37020","title":"KPMI Valve Stem Seal - 4\/PK HD Evolution '1987-1999 — Harley-Davidson Sportster 883, Softail Heritage Classic, Sportster 883 Hugger (1984-2004)","description":"\u003cp\u003eKPMI Red Viton® valve stem seals for Harley Evolution engines, sold in a 4-pack for both intake and exhaust applications. These high-temperature seals prevent oil from entering the combustion chamber and are engineered to handle maximum valve lift without leaking.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eViton® construction resists high temperatures and petroleum products\u003c\/li\u003e\n  \u003cli\u003ePrevents oil blow-by into combustion chamber\u003c\/li\u003e\n  \u003cli\u003eSupports maximum valve lift\u003c\/li\u003e\n  \u003cli\u003e4-pack quantity\u003c\/li\u003e\n  \u003cli\u003eSized for Evolution engine specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e KPMI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 71010-4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 4 per pack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 1.3 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 3.65 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 0.7 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Harley-Davidson Evolution engines, 1987-1999 model years.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eHow many seals are in a pack?\u003c\/h3\u003e\n\u003cp\u003eFour seals — enough for one complete valve set on a single-cylinder or one front\/rear pair on a twin.\u003c\/p\u003e\n\u003ch3\u003eWill these fit my Twin Cam engine?\u003c\/h3\u003e\n\u003cp\u003eNo — these are designed for Evolution engines only (1987-1999). Twin Cam owners need a different part number.\u003c\/p\u003e\n\u003ch3\u003eWhat makes Viton® better than rubber seals?\u003c\/h3\u003e\n\u003cp\u003eViton® withstands higher temperatures and resists oil and combustion by-products better than standard rubber, preventing blow-by into the cylinder.\u003c\/p\u003e\n\u003ch3\u003eDo I need special tools to install these?\u003c\/h3\u003e\n\u003cp\u003eValve stem seals require removal of the rocker covers and valve springs — a professional mechanic or experienced builder should handle installation.\u003c\/p\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":53035629936751,"sku":"191-37020","price":6.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_a2092593-30b1-48eb-a719-dc0c9c0988c8.png?v=1779562593","url":"https:\/\/vtwinbikers.com\/products\/kpmi-valve-stem-seal-4-pk-hd-evolution-1987-1999-191-37020","provider":"Vtwinbikers","version":"1.0","type":"link"}