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COMP Cams hardened ID spring locators protect the head and shim while locating and holding the valve spring in place under high RPM and heavy spring pressures. Made to work with dual-spring setups, the 4770 style has a 1.500" OD and .585" ID and fits COMP Cams springs such as 985, 978, 924 and 939, offering reliable centering and reduced need for head machining compared to older cup-style seats.
COMP Cams ID Spring Seats 1.50 X 585 X
