3/8" Steel & Viton Valve Stem Seals (0.375" x 0.563" Suits Ford FE) Speedmaster's air cleaners not only

Speedmaster's air cleaners not only look great

You cannot over-shift and miss a gear with Speedmaster automatic shifter

These kits include all of the necessary external block freeze plugs

Will work with any Speedmaster or Speedmaster bellhousing

Speedmaster 7000 Series Cast Body Ready-to-Run distributors are the perfect upgrade for your outdated and worn-out stock distributor

3/8" Steel & Viton Valve Stem Seals (0.375" x 0.563" Suits Ford FE) Speedmaster's air cleaners not onlyValve 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.