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This COMP Cams ID spring seat is a hardened steel valve spring locator designed to withstand extreme spring pressures and high RPM. It protects the head and shim while locating the spring from the inside using an inboard shoulder. The product description lists a 1.270" OD and a .520" ID for the 4862 style, offering a durable seating solution for demanding engines.
COMP Cams ID Spring Seat GM LS71.270in X
