WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
Assembly is in the reverse order of disassembly.
NOTE:
Install the inner rotor and outer rotor with the punch marks on the oil pump cover side.
Fig 1: Identifying Oil Pump Inner Rotor, Outer Rotor With Punch Marks