This product has been discontinued by Nissan and is no longer available.

OEM Infiniti Upstream (Front) Oxygen Sensor for various Nissan and Infiniti models. 

Installed before the catalytic converters on the exhaust manifold, these sensors often prove to be difficult to remove without destroying the threads. These sensors are also referred to as a "Air-Fuel Ratio Sensor" by Nissan/Infiniti.

Sold individually, one sensor will fit either the Left or Right side of the vehicle.

Z1 Motorsports recommends the usage of an anti-seize compound on the threads of the oxygen sensor to make future servicing much easier.

Fits:

• 2004-2006 Infiniti QX56 (VK56DE)
• 2004-2006 Nissan Titan (VK56DE)
• 2005-2006 Nissan Frontier (VQ40DE)
• 2005-2006 Nissan Xterra (VQ40DE)
• 2005-2006 Nissan Pathfinder (VQ40DE)