11/32" Viton Valve Stem Seals (Suits: 0.530" Guides) Provides very positive shifts for

Provides very positive shifts for high performance street use or for competitive events

and large HEIs or DuraSparks

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

These Speedmaster head bolt bushing kits allow you to use stock or aftermarket head bolts with Speedmaster or other aftermarket cylinder heads

ensuring superior durability and performance

11/32" Viton Valve Stem Seals (Suits: 0.530" Guides) Provides very positive shifts forValve 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.