The component with the lowest price in the OIL PUMP schematic is the Bolt,socket.
The sub assemblies and components that make up this Oil Pump include this Oil Pump Assy, the most expensive part.
The Gasket (4x7) (nas) is the most widely applied product in the BT1100 2002 5JN1 SWITZERLAND 1A5JN-332E2 OIL PUMP ( four times ).