Fel-Pro valve stem oil seal set for Ford F-250 HD supplies application-specific valve stem seals to prevent oil from entering the combustion chamber during valve operation. It’s intended for seal replacement during valve train service. Designs vary by application and the set reflects that choice; parts are validated by Fel-Pro engineers, use appropriate materials, and include an installation aid to protect the seal during fitting.
Fel-Pro Ford F-250 HD SS 70070 Engine Valve Stem Oil Seal Set