Left Oxygen Sensor for 2003-2004 Nissan Pathfinder - DENSO 234-4295

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$108.99
MPN: 234-4295
Item Package Code: EA
Part Has Core (Y/N): N
Item Package Quantity: 1
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DENSO Auto Parts Oxygen Sensor P/N:234-4295
DENSO Auto Parts Oxygen Sensor P/N:234-4295
$108.99

Help keep the fuel mixture in check with the DENSO Auto Parts Oxygen Sensor 234-4295 — a direct-fit 02 sensor for the 2003-2004 Nissan Pathfinder 3.5L that threads into the upstream left position. This narrow-band, heated 4-wire sensor measures the oxygen content in the exhaust stream and signals the ECU, which trims fuel delivery accordingly.

  • Laser-welded stainless housing: resists corrosion, while a PTFE filter blocks contaminants under harsh engine conditions.
  • Dual-layer protection: shields the ceramic element for fast, reliable response times.
  • Aluminum oxide trap layer: DENSO's exclusive trap layer, designed to protect the ceramic element from silicone and lead poisoning.
  • Direct-fit build: heated 4-wire design with a male connector, 0.708 in thread diameter and a 35.83 in wiring harness.

Each sensor is precision-built and tested to strict OE standards for an exact, first-time replacement. Country of origin: United States.

This part cross-references / interchanges with the following part numbers:

213-2979, OS2126, 15529, 226915W900, 24400, SG1293, 250-24451, 350-34175

Frequently Asked Questions

Where does this DENSO 234-4295 oxygen sensor install?

It is the upstream left oxygen sensor for the 2003-2004 Nissan Pathfinder 3.5L, mounting in the exhaust ahead of the catalytic converter to monitor the air-fuel ratio.

Is this a camshaft, crank, or ABS sensor?

No. This is an oxygen (O2) sensor, a different component from the camshaft position, crankshaft position, and ABS wheel speed sensors.

How many wires does this sensor have?

It is a 4-wire heated, narrow-band oxygen sensor with a male connector and a 35.83 in wiring harness.

Is this a direct-fit sensor?

Yes. The manufacturer lists it as a direct-fit, specific-fit sensor with a threaded 0.708 in mounting for the listed application.

What signs may mean this oxygen sensor needs replacing?

A check engine light, rough idle, or reduced fuel economy can point to a failing O2 sensor. Diagnose the cause first, since these symptoms have other possible sources.