COMP Cams 3/8 Valve Stem Seals Posi. Stop Teflon .530 4030 Radiator Support Bar

Radiator Support Bar

On the Mark V and VI Big Block Chevrolet engines

Steel Ball

1974-1985 Buick Century

Bolt-on kit fits most Howe

COMP Cams 3/8 Valve Stem Seals Posi. Stop Teflon .530 4030 Radiator Support BarCOMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger than stock diameter spring is used, in the case of a double spring, the positive stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon