Supertech Performance GDE-H66-E Valve Guide Exhaust Honda LS/H23 series 6.6mm stem Manganese Bronze.

Supertech Performance GDE-H66-E Valve Guide Exhaust Honda LS/H23 series 6.6mm stem Manganese Bronze.

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.