A sample from the products for the Oil Pump include: Rotor B,pump Out., Pin,spring,2.5x18, Shaft,oil Pump, Pin,cotter 3.0mm.
On this parts fiche the O-ring,7x1.7 is the most specified component.
The most reasonably priced component used on the Gb500 Touristtrophy 1989 (k) Usa California Oil Pump is the Screw,pan,5x40.
