{"product_id":"manley-chevrolet-5-3l-l83-exhaust-valve-kit-1-560in-head-dia-5-208in-o-a-length-0-3136in-stem-12359-8","title":"Manley Chevrolet 5.3L L83 Exhaust Valve Kit - 1.560in Head Dia. 5.208in O\/A Length, 0.3136in Stem - 12359-8","description":"\u003cp\u003eManley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM.\u003c\/p\u003e\n\u003cp\u003eManley Valve - Exhaust, Valve-R\/M L83 5.3L 1.560, .3136 STEM.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRecommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.\u003c\/li\u003e\n\u003cli\u003eSwirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.\u003c\/li\u003e\n\u003cli\u003eStainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.\u003c\/li\u003e\n\u003cli\u003eVariety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.\u003c\/li\u003e\n\u003cli\u003eChrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460802531464,"sku":"man12359-8","price":188.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/c6ccd65ebfd1e956c2aff76b8661b6a9L_3f8fdf4b-0d6b-412b-a7b3-28a8f7a3f698.jpg?v=1787945845","url":"https:\/\/www.allianceracing.com\/products\/manley-chevrolet-5-3l-l83-exhaust-valve-kit-1-560in-head-dia-5-208in-o-a-length-0-3136in-stem-12359-8","provider":"Alliance Racing","version":"1.0","type":"link"}