COMP Cams Valve Seal 5/16in PTFE W/500 G 513-1

COMP Cams Valve Seals 513-1 1 PTFE Valve Seal for .500" Guide Size, 5/16" Valve Stem 513-1 - Valve Seal, 5/16" PTFE W/500 Guide COMP Cams Valve Seal 5/16in PTFE W/500 G