This COMP Cams hardened steel spring seat is an inboard-locating design that centers the spring and secures it without excessive head machining. The locator protects the head and shim from high spring pressures found in racing engines and works with Beehive style springs; the 4640 seat's 1.600" outside diameter pairs well with COMP Cams #26055 Beehive springs for reliable spring location.
COMP Cams Spring Seat For 26055 With .5