{"product_id":"v-twin-cast-iron-standard-intake-exhaust-knucklehead-valve-guide-part-18185-40","title":"V-Twin Knucklehead Cast Iron Valve Guide 18185-40 for Intake and Exhaust","description":"\u003cdiv\u003e\n\u003ch1\u003eV-Twin Knucklehead Cast Iron Valve Guide 18185-40 – Intake \u0026amp; Exhaust\u003c\/h1\u003e\n\u003cp\u003eMaintain valve alignment and longevity with the V-Twin Cast Iron Valve Guide, designed for Knucklehead engines in Harley-Davidson models from 1936 to 1947. This standard intake\/exhaust valve guide accepts valve stem seals and pairs with common components to keep your valve train operating smoothly.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaterial: Cast iron\u003c\/li\u003e \u003cli\u003eLength: approximately 2.08 inches\u003c\/li\u003e \u003cli\u003eApplications: Fits both intake and exhaust; accepts valve stem seals\u003c\/li\u003e \u003cli\u003eCompatibility: Harley-Davidson FL models 1936–1947; EL models 1936–1938\u003c\/li\u003e \u003cli\u003eOEM cross-references: 18185-40 and 167-40\u003c\/li\u003e \u003cli\u003eRecommended pairing: #14-0973 Valve Stem Seal Set\u003c\/li\u003e \u003cli\u003eOrigin: Manufactured in Taiwan\u003c\/li\u003e \u003cli\u003eRelated hardware: Overhead Valve Guide Gasket (SKU 15-0297), Replica Valve Spring Set (SKU 13-0792), Nitrate Intake\/Exhaust Valves (SKUs 11-9641 and 11-9643)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned for restoration or repair of classic Knucklehead engines, this valve guide helps maintain consistent valve clearance and stable airflow across the intake and exhaust cycles, supporting reliable performance and smoother operation over time.\u003c\/p\u003eKnucklehead standard cast iron valve guide fits intake and exhaust and accepts valve stem seals.\n\u003cp\u003eThe V-Twin Cast Iron Standard Intake\/Exhaust Knucklehead Valve Guide is an essential component designed for classic Harley Davidson models from 1936 to 1947. Crafted from durable cast iron, this valve guide ensures reliable operation and longevity in your engine's intake and exhaust systems. Its precise design and material composition help maintain proper valve alignment and movement, contributing to optimal engine performance. This guide is compatible with a range of vintage Harley Davidson FL and EL models, making it a reliable choice for restoration or repairs.\u003c\/p\u003e\n\u003cp\u003eMeasuring approximately 2.08 inches in length, this valve guide is engineered for ease of installation and compatibility with your existing engine components. It is recommended to use this guide in conjunction with the #14-0973 Valve Stem Seal Set for optimal sealing and valve operation. The guide's robust construction ensures consistent valve clearance and reduces wear over time, supporting smooth engine function and power output. Whether you're restoring a vintage motorcycle or replacing worn parts, this guide provides a trusted solution to maintain your Harley Davidson's performance.\u003c\/p\u003e\n\u003cp\u003eAs a vital part of your engine's valve train, the V-Twin Cast Iron Valve Guide works seamlessly with accessories such as the Overhead Valve Guide Gasket (SKU 15-0297), Replica Valve Spring Set (SKU 13-0792), and Nitrate Intake and Exhaust Valves (SKU 11-9641 and 11-9643). Its compatibility with OEM cross-references 18185-40 and 167-40 assures quality and fitment for your specific Harley Davidson model. Trust in V-Twin's heritage of quality craftsmanship to keep your vintage motorcycle running smoothly and reliably for years to come.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eMaterial: Cast iron for durability and longevity\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eDesign: Suitable for intake and exhaust applications on vintage Harley Davidson models\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eLength: Approximately 2.08 inches for proper fit and function\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eCompatibility: Fits Harley Davidson FL models from 1936 to 1947 and EL models from 1936 to 1938\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eRecommended Use: Best paired with #14-0973 Valve Stem Seal Set for optimal performance\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eOrigin: Manufactured in Taiwan to meet quality standards\u003c\/li\u003e\u003c\/ul\u003e\n\u003cbr\u003e\nFitment:\u003cbr\u003e\nHarley Davidson EL 1936\u003cbr\u003e\nHarley Davidson EL 1937\u003cbr\u003e\nHarley Davidson EL 1938\u003cbr\u003e\nHarley Davidson EL 1939\u003cbr\u003e\nHarley Davidson EL 1940\u003cbr\u003e\nHarley Davidson FL 1941\u003cbr\u003e\nHarley Davidson FL 1942\u003cbr\u003e\nHarley Davidson FL 1943\u003cbr\u003e\nHarley Davidson FL 1944\u003cbr\u003e\nHarley Davidson FL 1945\u003cbr\u003e\nHarley Davidson FL 1946\u003cbr\u003e\nHarley Davidson FL 1947\u003c\/div\u003e","brand":"V-Twin","offers":[{"title":"Default Title","offer_id":44642973188138,"sku":"11-0790","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/11-0790.jpg?v=1785538273","url":"https:\/\/atticusgoods.com\/products\/v-twin-cast-iron-standard-intake-exhaust-knucklehead-valve-guide-part-18185-40","provider":"Atticus Goods","version":"1.0","type":"link"}