Description

1.263 Od. 0.510 Id. 0.041 Thick Hardened Steel Valve Spring Seat LS1

As with all other parts in the valvetrain, the area where the spring sits takes a beating. The old standard shims simply will not hold up to the extreme pressures and high rpm found in today’s performance engines. PCE offers this set of valve spring shims to solve this problem and eliminate failures.