COMP Cams 7 Valve Locks GM LS1 Helmet Headphones GM Disc / Drum Brake

GM Disc / Drum Brake

1967-1971 GMC P15/P1500 Van

causing fuel system contamination

1980-1997 Mercury Cougar

Unlike plastic brake ducts

COMP Cams 7 Valve Locks GM LS1 Helmet Headphones GM Disc / Drum BrakeThese single groove Machined Steel Street Locks with 7? lock angle and 8mm valve stem size are perfect locks for GM Gen III LS1 LS2 LS6 applications. It is critically important to make sure valve locks match the valve size. There should always be a small gap between the two halves of the lock when they are properly positioned on the valve stem. If the two halves fit together without a gap, they are too large. If the locks fit tight to the stem and