This COMP Cams spring seat is an ID locator with 1.300" OD, .570" ID and .060" thickness designed for applications with a .570" guide and .910" spring ID. Machined from hardened steel, the 4677 seat centers the spring using an inboard locating shoulder and helps retain the spring in high-load valve train assemblies. Use it where that specific guide and spring combination is specified.
COMP Cams Spring Seat .060 X .570 X .91