COMP Cams ID Spring Seats Eb 1.55 X 630 4783-100 Apoc Industries 10-21 Toyota 4Runner

10-21 Toyota 4Runner

SLT 2002 - 2005 GMC Sierra 1500 HD SLT

Anniversary Edition 2003 - 2008 Subaru Forester X 2003 - 2007 Subaru Forester XS 2005 Subaru Forester XS L

050" oil holes

Base 1963 - 1966 GMC G1000 Series Base 1975 - 1978 GMC G15 Vandura

COMP Cams ID Spring Seats Eb 1.55 X 630 4783-100 Apoc Industries 10-21 Toyota 4RunnerCOMP Cams Valve Springs, Retainers 4783 100 The older style standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today. COMP Cams offers a simple but effective solution to this problem a thin, hardened steel alloy seat which will not only protect the head and shim but also locate and hold the spring in place. Previously, this part has been available only in a cup form with the retaining