Competition Cams 475116 Spring Shim 024185932673 May be used to convert

May be used to convert one-piece rear main seal on 1986 and newer SB Chevy blocks to the old style

Easy to mount

Three layer foam pad with moisture barrier

Mounts in back of cabinet

Competition Cams 475116 Spring Shim 024185932673 May be used to convertBrand Comp Cams Model 4751 16 Size n a Designed to equalize the installed height of the valve spring Made from high quality shim stock Provides long lasting durability Heat treated Features high rpm Competition Cams Spring Shims are designed to equalize the installed height of the valve spring. These shims are made from high quality shim stock which provides long lasting durability. They are heat treated and capable of withstanding high rpm.