Supertech Valve Guides are precision-machined from high quality Magnesium Bronze material. These guides in combination with low friction nitrated valves provide the best solution for performance and durability.
If you have a performance motor, turbo or nitrous the heat destroys the OEM valve guides. These manganese bronze guides are just what you need at a price that's unbeatable for the quality. Why settle for OEM when you can have Supertech? Your motor deserves the best!