{"product_id":"manley-ford-427intake-valve-kit-2-190in-head-dia-5-446in-o-a-length-0-3715in-stem","title":"Manley Ford 427intake Valve Kit - 2.190in Head Dia. 5.446in O\/A Length, 0.3715in Stem","description":"Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46778768818363,"sku":"MAN11884-8","price":340.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0629\/9556\/2683\/files\/5f59adb721bd97eaa904eecff3d033b0L_d4462aba-d084-403f-b84f-9f82c1861051.jpg?v=1753517416","url":"https:\/\/drifthq.com\/es\/products\/manley-ford-427intake-valve-kit-2-190in-head-dia-5-446in-o-a-length-0-3715in-stem","provider":"Drift HQ","version":"1.0","type":"link"}