Parts such as the Oil Pump: Dowel,pin,10x16, Roller 2.5x11.8, O-ring 10x2, Bolt Flange 6x35 are included in the Trx500fma Ed 2010 (a) European Direct Sales Oil Pump parts fiche.
Of all the components that make up this Oil Pump the Bolt,flange,6x12 has the lowest price.
The most expensive part in this assembly is the Pump Assy,oil.