11/32" Viton Valve Stem Seals (Suits: 0.530" Guides) NOTE: You need Studs and

NOTE: You need Studs and Guide Plates to Run Roller Rockers

Heat-treated internal parts

Control your engine's movement with a Speedmaster front motor plate

people tend to forget that the yoke is the one piece that ties it all together

ensuring superior durability and performance

11/32" Viton Valve Stem Seals (Suits: 0.530" Guides) NOTE: You need Studs andValve 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.