comp cams engine valve spring seat, id spring locator, 1.540 in. od, .640 in. id, .060 in. thick, set of 16

As with all other areas in the valvetrain, the area where the spring sits also takes a beating. The old standard shims and/or seats simply will not hold up to the extreme pressures and high rpm found in today's performance engines. COMP Cams valve spring locators solve this problem and eliminate failures.