8mm LS Steel & Viton Dual/Single Spring Valve Stem Seals (Suits: 0.4825" Guides) Individually milled from super durable

Individually milled from super durable 6061 T6 aluminum billets

Speedmaster carburetor adapters are designed to allow you to mount most any carburetor on most any manifold

while promoting more consistent torque loading

Speedmaster automatic transmission rebuild components ensure smooth gear changes and overall transmission performance

High-volume water pumps have a ribbed aluminum housing and a heavy duty ball/roller bearing assembly

8mm LS Steel & Viton Dual/Single Spring Valve Stem Seals (Suits: 0.4825" Guides) Individually milled from super durableValve 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.