Description & Size Guide
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.
58-90 Big Twin (OEM cases); 58-99 Big Twin (aftermarket cases) (Excl. all Twin Cam)
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