Manley Ford 4.6L Modular V8 Exhaust Valve Kit - 38.50mm Head Dia. 4.585in O/A Length, 0.2345in Stem

Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction.Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance.Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.