Comp Cams 1.550 Spring Seat Cups HLN Diesel Heaters Custom 1978 - 1981 Buick

Custom 1978 - 1981 Buick Century Sport

featuring a breathable membrane style motor breather for heat expansion and contraction

• Hand washable

Why order a Stages package

Requires cutting of the front bumper for winch line and fairlead

Comp Cams 1.550 Spring Seat Cups HLN Diesel Heaters Custom 1978 - 1981 BuickSpring Locator Cups: . 060" Thick, . 640" I. D., 1. 670" O. D. The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines. COMP Cams offers a simple but effective solution to this problem. These Valve Spring Locators provide a thin, hardened steel alloy seat that will not only protect the head and shim, but also locate and hold the spring in place. Previously, this part has been available only in a cup