{"product_id":"manley-chevrolet-5-3l-l83-exhaust-valve-kit-1-560in-head-dia-5-208in-o-a-length-0-3136in-stem","title":"Manley Chevrolet 5.3L L83 Exhaust Valve Kit - 1.560in Head Dia. 5.208in O\/A Length, 0.3136in Stem","description":"\u003cp\u003eStainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.\u003c\/p\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":47146746249383,"sku":"MAN12359-8","price":193.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/files\/c6ccd65ebfd1e956c2aff76b8661b6a9L_026e8bf0-5b1f-4eee-83b8-ac8c22799fe1.jpg?v=1760843853","url":"https:\/\/www.straightsiximports.com\/en-us\/products\/manley-chevrolet-5-3l-l83-exhaust-valve-kit-1-560in-head-dia-5-208in-o-a-length-0-3136in-stem","provider":"Straight Six Imports","version":"1.0","type":"link"}