Walker Products Oxygen Sensor P/N:350-34303
Walker Products 350-34442 left oxygen sensor for the 2001-2002 Nissan Pathfinder V6 3.5L and other vehicles measures combustion efficiency from the amount of oxygen in the exhaust gas.
A worn sensor can show up as an engine that runs poorly, higher fuel use or a lit malfunction indicator light. The wiring harness or the connector may be behind those signs instead, so inspect both for physical damage before you replace the sensor.
This direct-fit sensor suits the 2001-2002 Nissan Pathfinder V6 3.5L and the 2001-2003 Infiniti QX4 V6 3.5L. The listing is one sensor for the downstream left position; sensors for other positions are ordered separately.
Fit and size
Build and materials
One oxygen sensor. The downstream left position takes one.
Is this the right O2 sensor for the 2001-2002 Nissan Pathfinder V6 3.5L?
Yes. Walker Products 350-34442 is the downstream left oxygen sensor for the 2001-2002 Nissan Pathfinder V6 3.5L, and that position takes one.
Does this QX4 oxygen sensor fit the 2001-2003 Infiniti QX4 V6 3.5L?
Yes. Walker Products 350-34442 fits the 2001-2003 Infiniti QX4 V6 3.5L as its downstream left oxygen sensor.
Is this oxygen sensor narrow-band, and how many wires does it have?
Yes, it is a narrow-band sensor with 4 wires and an M18 - 1.5 thread.
Will a failing oxygen sensor store a fault code?
On newer vehicles, yes: fault codes are stored in the ECU, and some relate to the affected sensor and its systems. A failing sensor can also raise exhaust emissions.
What does the coating on the Walker Products 350-34442 do?
The coating on the platinum electrodes keeps combustion residue and particulates in the exhaust gases from contaminating or eroding the electrode surfaces.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.