Genuine Nissan Injector Pump O'Ring

Suit GU Patrol with ZD30 motor
Suit D22 Navara with ZD30 motor & YD25 motor
Suit D40 Navara Spanish Build YD25 upto 01/2010 VIN# starting with VSK
Suit R51 Pathfinder Spanish Build YD25 upto 03/2010 VIN# starting with VSK
Suit D40 Navara Thai Build YD25 03/2008 - 12/2011 VIN# starting with MNT

This is the O'Ring at the front of the injector pump where it bolts to the timing case.
It is common for these seals to go hard and crusty over time, this can cause a fuel leak.