In this schematic the "Gasket,10x14.5x1.5 (nas)" is used most often.
The most reasonably priced component used on the Kef300-a5 Lakota300 1999 Usa Canada Oil Pump/oil Filter is the Screw-pan Head,6x12.
The Oil Pump/oil Filter assembly is constructed from several parts from which the Pump-assy-oil is the most expensive.