WARNING: This page is about a different car, the 2004 Subaru Outback, 2004 Subaru Legacy, and 2004 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The illustration for 2.5 L Non-TURBO model is shown below. (Not shown for TURBO model and 3.0 L mod because it cannot be disassembled.)
Fig 1: Exploded View Of Oil Pump Components With Torque Specifications