Even in the most severe environments, these valves are designed to outflow and outperform the competition
For added strength, one-piece forgings are manufactured from high-temperature materials
Performance-oriented shapes and durable chrome-plated stems featured with a durable swirl-polish
Even at high rpm, a stable valve train is ensured due to the up to 30 percent weight reduction over stock
Durable hard-chrome plating stems
Replaces OEM # 18074-66
Head diameter 1.9375 in., stem diameter .3765 in.
Sold in pairs
NOTE: Nitride finish is a special heat treatment developed to work specifically with Manleys stainless steel alloys. The Manley nitride process imparts a superficially hard and lubricous surface superior to all others.