Locked thrust washer, camshaft

58-90 B.T. (OEM CASES); 58-99 B.T. (AFTERMARKET CASES) (EXCL. ALL TC)

With 'ears'. Fits against the crankcase, behind camshaft. This is the locked 'early' 58-90 model for which a separate thrust washer shim is used to achieve correct camshaft end-play. It is also used in virtually all aftermarket 58-99 single cam engines. Note: For 91-99 OEM cases the MCS 906636 thrust washer is used, which is not 'locked' since it has no 'ears'. For this thrustwasher shims for correct end-play cannot be used since the thinnest is already too thick.