COMP Cams Valve Seals 3/8 Viton Metal B - cca521-8 missing-image -cc Cooling::Transmission Coolers 1991-1993 GMC

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COMP Cams Valve Seals 3/8 Viton Metal B - cca521-8 missing-image -cc Cooling::Transmission Coolers 1991-1993 GMCCOMP Cams offers a complete line of valve stem oil seals, from the stock GM o ring to the positive stop PTFE seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The o ring seals use the standard retainer and oil splash shield. The umbrella seal is normally used when a larger than stock diameter spring is used, and in the case of a double spring, the positive stop PTFE seal