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The COMP Cams 4712 ID spring seat is a hardened steel locator designed for GM LS1 1.400" applications. It centers and holds the valve spring with an inboard locating shoulder to protect the head and shim during high RPM and heavy spring loads. The 4712 features a 1.400" OD and .520" ID, offering a precise seat when those dimensions are specified for LS1 valve trains.
COMP Cams Spring Seats For GM LS1 1.400
