Walker Products Oxygen Sensor 250-23122
Walker Products Oxygen Sensor 250-23122 - view 2
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Walker Products Oxygen Sensor 250-23122
Walker Products Oxygen Sensor 250-23122 - view 2
Walker Products Oxygen Sensor 250-23122 - view 3
Walker Products Oxygen Sensor 250-23122 - view 4

Left Oxygen Sensor for 2001-2002 Nissan Pathfinder & More - Walker 250-23122

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$86.99
WARNING:California Proposition 65▾
MPN: 250-23122
Item Package Code: EA
Part Has Core (Y/N): N
Item Package Quantity: 1
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Walker Products Oxygen Sensor P/N:250-23122
Walker Products Oxygen Sensor P/N:250-23122
$86.99

Walker Products 250-23122 left oxygen sensor for the 2001-2002 Nissan Pathfinder V6 3.5L and other vehicles measures the oxygen content of the exhaust gas. The Walker Products oxygen sensor is a 3-wire narrow-band unit.

  • Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
  • Determines the oxygen content of the exhaust gas to monitor the air-fuel ratio for combustion efficiency
  • Electrodes made of a gas-permeable platinum layer
  • Measures oxygen levels to help fine-tune the air-fuel mixture and support fuel economy
  • Monitors exhaust gases to help reduce pollutants

Quick facts

  • Part: Walker Products 250-23122 oxygen sensor
  • Fits: 2001-2002 Nissan Pathfinder V6 3.5L and other vehicles
  • Position: Upstream left
  • Condition: New

A failing oxygen sensor can show up as a poorly running engine, higher fuel use, more exhaust emissions or a lit malfunction indicator light. These signs alone do not prove the sensor is at fault, since a vacuum leak can also upset how the engine runs. The sensor, wiring harness and connector can also be checked for physical damage.

Fits

This left sensor is a direct-fit replacement for the 2001-2002 Nissan Pathfinder V6 3.5L and the 2001-2003 Infiniti QX4 V6 3.5L.

Specifications

Fit and size

  • Position: upstream left
  • Quantity per vehicle: 1
  • Thread size: M18 - 1.5

Build and materials

  • Type: narrow-band, direct fit
  • Wires: 3
  • Electrodes: gas-permeable platinum layer
  • Condition: new

In the box

One oxygen sensor for the upstream left position. The left side takes one, and the right side is a separate part.

Frequently Asked Questions

Is this O2 sensor right for the 2001-2002 Nissan Pathfinder V6 3.5L?

Yes, Walker Products 250-23122 is a direct-fit left upstream oxygen sensor for the 2001-2002 Nissan Pathfinder V6 3.5L. This side takes one.

Does this oxygen sensor fit the 2001-2003 Infiniti QX4 V6 3.5L?

Yes, it is listed for the 2001-2003 Infiniti QX4 V6 3.5L as a direct-fit left upstream sensor. This side takes one.

Is this a narrow-band or wide-band oxygen sensor?

Walker Products 250-23122 is a narrow-band oxygen sensor with 3 wires and a direct fit for its application.

Can a failing left upstream oxygen sensor store a fault code?

Yes, newer vehicles store fault codes in the ECU, and some relate to the affected sensor and its associated systems. A lit malfunction indicator light can be one sign.

Does this listing include both the left and right oxygen sensors?

No. This listing is one left upstream oxygen sensor, and the right side is a separate part.

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