Made of heat-treated steelMachined to fit .725" seal and .565" valve guideLower collar is counter bored to allow for greater retainer-to-seal clearanceMade in the U.S.A.
All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistanceMade in the U.S.A. Honda --...