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The COMP Cams inboard ID spring seat centers valve springs and protects the head with hardened steel construction suited for high RPM and heavy spring pressures. The 4774 features a 1.625" OD and a .570" ID and is compatible with COMP Cams 996, 998, 26099 and 991 dual valve springs, providing reliable spring centering and reducing the need for head machining.
COMP Cams ID Spring Seat 1.625 X 570 X
