COMP Cams ID Spring Seats 1.55 X 630 X - cca4780-16 missing-image Retainers 2005 Mercury Grand Marquis

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COMP Cams ID Spring Seats 1.55 X 630 X - cca4780-16 missing-image Retainers 2005 Mercury Grand MarquisThe 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 portion being on the outside of the part. This