8mm LS Steel & Viton Dual/Single Spring Valve Stem Seals (Suits: 0.500" Guides) capable of withstanding valve spring

capable of withstanding valve spring load

These kits are expertly crafted to restore optimal performance and are tailored to match specific cylinder head configurations and camshaft profiles

or better known to mechanics as the IAC

and 3/8 in

These Speedmaster Copper collector gaskets are about as close to blow-proof as you can get

8mm LS Steel & Viton Dual/Single Spring Valve Stem Seals (Suits: 0.500" Guides) capable of withstanding valve springValve 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.