COMP Cams 3/8 Valve Stem Seals Posi. Stop Teflon .530 Water Neck Spacer while a "K" suffix indicates

while a "K" suffix indicates bearings which are coated with moly/graphite

3/16 in Aluminum Mandrel

Fits 1982-1995 Ford

2011-2016 Dodge Durango

COMP Cams 3/8 Valve Stem Seals Posi. Stop Teflon .530 Water Neck Spacer while a "K" suffix indicatesCOMP 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