Comp Cams Spring Seat, 5.7/6.1 Hemi .525 Guide Exh

ID Spring Locator - 1.285" OD, .525" ID, .040" Thickness Made from hardened steel, this locator uses an inboard locating shoulder to center the seat and hold the spring in place. The 4685 seat's 1.285" OD works well with our valve springs in ." guide applications.