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OEM Upstream O2 Sensor for your 2005-2008 Infiniti M35 equipped with the 3.5L (VQ35DE) engine.
Installed before the catalytic converters on the exhaust manifold, these sensors often prove to be extremely difficult to remove without destroying the threads when installing an aftermarket set of headers or forced induction setup. These sensors are also referred to as an "Air-Fuel Ratio Sensor" by Nissan/Infiniti.
Sold Individually. | One sensor will fit either the Left or Right side of the vehicle.
Fits: