3/8" Steel & Viton Valve Stem Seals (0.375" x 0.563" Suits Ford FE) pulling trucks

pulling trucks

not from sand molds

Speedmaster valve locks are wider-angled 10 degree locks

They're designed with performance in mind

They use silicon aluminum bi-metal construction

3/8" Steel & Viton Valve Stem Seals (0.375" x 0.563" Suits Ford FE) pulling trucksValve stem seals control the lubrication of the valve stem as it slides in the valve guide. Too little oil causes stem and guide wear. Too much oil increases oil consumption and can cause a buildup of carbon, leading to valve seat damage and early valve grind. Speedmaster valve seals are posi stop seals made from high temperature Viton material for a long lasting seal.