The COMP Cams 0.015" valve spring shims with a 1.640" outside diameter and 0.635" inside diameter equalize installed spring heights for more consistent valvetrain performance. Heat-treated and made from premium shim stock to resist aggressive cam lobe wear, these shims preserve spring seat height under demanding cam profiles. Available in sets to cover complete cylinder banks as needed.
COMP Cams Spring Shims .015 X 1.640