Valve Stem Diameter | 0.313 in. | |
Valve Stem Seal Type | Positive stop | |
Valve Stem Seal Material | Viton® | |
Machine Work Required | No | |
Valve Guide Diameter (in) | 0.446 in. | |
Quantity | Sold as a set of 16. | |
Notes | Contains 8 intake seals and 8 exhaust seals. | |
COM509-16
COMP Cams offers a complete line of valve seals, from the stock GM O-rings to the positive-stop PTFE seals. 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 seals are normally used when a larger-than-stock diameter spring is used. In the case of a double spring, the positive stop PTFE seals are used. For triple-spring applications, use the smaller-diameter Viton® seals.