The Crankcase / Oil Filter assembly is constructed from several parts from which the Crankcase Set is the most expensive.
The most reasonably priced component used on the Cb550 K1 Four 1975 Usa Crankcase / Oil Filter is the Screw,tap 5x16.
With a quantity of ten pieces, the Bolt,flange, 6x32 is the most used part in the CRANKCASE / OIL FILTER diagram.