Of all the components that make up this Oil Pump / Primary Drive Gear the O-ring,15.3x3.5 has the lowest price.
The Bolt Flange 6x14 is the most widely applied product in the CX650C CUSTOM 1983 (D) USA OIL PUMP / PRIMARY DRIVE GEAR ( two times ).
The Oil Pump / Primary Drive Gear assembly is constructed from several parts from which the Pump Assy.,oil is the most expensive.