{"product_id":"manley-valve-exhaust-valve-ls7-s-d-1-615","title":"Manley Valve - Exhaust, Valve-LS7 S\/D 1.615","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","offers":[{"title":"Default Title","offer_id":52950753476902,"sku":"BBPB_11679-8","price":301.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5697\/5654\/files\/public_69e1355a-19ba-4866-8c38-03d446ecc94a.jpg?v=1775066619","url":"https:\/\/ossparts.com\/products\/manley-valve-exhaust-valve-ls7-s-d-1-615","provider":"Operational Speed Supply","version":"1.0","type":"link"}