COMP Cams 3/8 Valve Stem Seals Posi. Stop Teflon .530 Water Neck Spacer The increased belt width helps

The increased belt width helps reduce belt slippage when used with high-performance mechanical fans

1979-1986 GMC P2500

2011-2016 Dodge Durango

050'' offset the intake rocker arm will be at a slight angle and the roller tip will not be perfectly parallel or centered on the valve tip

COMP Cams 3/8 Valve Stem Seals Posi. Stop Teflon .530 Water Neck Spacer The increased belt width helpsCOMP 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