Supertech GDE-HB55-E valve guide Honda Civic, Integra, Prelude B16A,B17A, B18C, H22A D16 exhaust

For: Honda Civic, Integra, Prelude with B16A,B17A, B18C, H22A (1.6, 1.7, 1.8, 2.2 DOHC VTEC) engines

They are precision-machined from high quality Manganese Bronze material.
These guides in combination with our low friction black nitrided valves provides the best solution for performance and durability.

For Exhaust guides for high powered engines that need a better thermal transfer coefficient, we use a copper alloy. Copper has about 3 times higher thermal transfer than Manganese Bronze