COMP Cams Teflon Valve Seals - 5/16 H775C15 Arch supports are required when

Arch supports are required when installing Allstar front support kits

Ford Compact Truck 2005-10

Elastic on cuff

2009-2011 Chevrolet Express 1500

COMP Cams Teflon Valve Seals - 5/16 H775C15 Arch supports are required whenCOMP's Positive Stop PTFE valve seals offer more clearance for dual springs with better sealing than O ring or umbrella seals. These 513 seals have a . 600" outer diameter and fit applications with 5 16" valves and . 600" OD valve guides. The COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development. One thing COMP Cams has never forgotten: Performance is defined by what