The most reasonably priced component used on the Kaf620-scf Mule4010 2012 Usa / Trans4x4 Oil Pump/oil Filter is the Bolt-flanged,6x12.
On this parts fiche the Bolt-flanged,6x12 is the most specified component.
A sample from the products for the Oil Pump/oil Filter include: Screw-pan+-,5x12, Spring, Rotor-pump,in, Pin-gear Change Drum.