Front Oxygen Sensor for 2002-2004 Nissan Altima - Walker 350-34121

Walker Products 350-34121 front oxygen sensor for the 2002-2004 Nissan Altima V6 3.5L is an O2 sensor that reads the oxygen in the exhaust gas. That reading shows how efficiently combustion is running.

• Walker Products oxygen sensor with a 4-wire, narrow-band design
• Built for its specific application, with the diagnostic feedback the ECU requires
• Electrodes made of a gas-permeable platinum layer
• Measures oxygen levels to fine-tune the air-fuel mixture and support fuel economy
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates

Quick facts

• Part: Walker Products 350-34121 oxygen sensor
• Fits: 2002-2004 Nissan Altima V6 3.5L
• Position: Downstream front
• Condition: New

A failing oxygen sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. Before you replace it, check the wiring harness and connector for physical damage and rule out other causes of those signs.

Fits

This is a direct-fit replacement for the 2002-2004 Nissan Altima V6 3.5L, which takes one downstream front sensor. This listing is a single sensor.

Specifications

Product information is for general reference and may contain errors. See our Disclaimer.