Manley GM 6.6L Duramax Diesel Exhaust Valve Kit 1.300in Head Dia. 4.985in O/A Length, 0.2735in Stem

Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors, these valves are your ticket to unparalleled performance.