Valve Cover

COMP's Positive Stop PTFE valve seals offer more clearance for dual springs with better sealing than o-ring or umbrella seals. These 503 seals have a .630" outer diameter and fit applications with 11/32" valves and .530" OD valve guides.Installation...

Typically requiring no machine work, our 502 umbrella seals are a great option for stock guide applications with 11/32" valves needing a seal replacement.Installation InstructionsApplicationsEngines w/ Stock/Unmodified valve guides and 11/32" Valve...

Set of 12 O-Ring Valve Seals for Stock Guide Size, 11/32" Valve StemInstallation InstructionsInstallation InstructionsApplicationsEngines with stock/unmodified valve guides and 11/32" Valve StemsC.A.R.B. E.O. NumberN/AC.A.R.B. Exempt for California...

COMP's Positive Stop PTFE valve seals offer more clearance for dual springs with better sealing than o-ring or umbrella seals. These 500 seals have a .630" outer diameter and fit applications with 5/16" valves and .530" OD valve guides.Installation...