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Valve Guide Diameter (in.)
- 0.500 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 0.531 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.

Howards Cams Posi-Stop Valve Stem Seals

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Howards Cams Posi-Stop valve stem seals are offered in a couple of choices. Their Posi-Stop Viton® seals offer high-quality, high-temperature sealing that controls oil flow with no machining of guide required. Howards small O.D. valve seals are made from Fluoro elastomer high-temperature material with a rigid metal-clad chimney. Their small outside diameter provides greater spring clearance and are a must for triple springs.

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