Oxygen Sensor for 1999-2002 Nissan Quest & More - Walker 250-24371

Walker Products 250-24371 oxygen sensor for the 1999-2002 Nissan Quest V6 3.3L and other vehicles measures the oxygen in the exhaust gas. It is a heated, narrow-band sensor for the downstream position, where it gives the ECU diagnostic feedback on combustion efficiency.

• Monitors exhaust gases and reduces pollutants
• Electrodes with 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
• Determines the oxygen content of the exhaust gas to monitor the air-fuel ratio

Quick facts

• Part: Walker Products 250-24371 oxygen sensor
• Fits: 1999-2002 Nissan Quest V6 3.3L and other vehicles
• Position: Downstream
• Condition: New

A failing sensor can show up as a rough-running engine, higher fuel use, more exhaust emissions or a lit check engine light, and other faults produce the same signs. Before you replace it, find out whether the sensor is the cause. With the engine off and cool, look over the sensor, wiring harness and connector for physical damage, since damaged parts can shorten sensor life.

Fits

It is a direct-fit oxygen sensor for the 1999-2002 Nissan Quest V6 3.3L and the 1999-2002 Mercury Villager V6 3.3L. One sensor goes in the downstream position on both vehicles.

Specifications