Left Oxygen Sensor for 2001 Infiniti QX4 - Bosch 15445

Bosch 15445 left oxygen sensor for the 2001 Infiniti QX4 V6 3.5L measures exhaust oxygen and reports the air-fuel ratio to the ECU. This Bosch O2 sensor is a switching-type, narrow-band heated unit.

• Helps the ECU keep combustion stable and reduce emissions across operating conditions
• Built to withstand exhaust streams up to 1,880 °F, with a metal housing and integrated heater element
• TSP coating resists vibration, corrosion and contamination
• Reaches operating temperature in under 10 seconds for quick closed-loop control

Quick facts

• Part: Bosch 15445 oxygen sensor
• Fits: 2001 Infiniti QX4 V6 3.5L
• Position: Downstream left
• Material: Metal housing
• Condition: New

A failing oxygen sensor can show up as a check engine light, rougher running or poorer fuel economy. These signs alone do not prove the sensor is at fault, since an exhaust leak near it can give similar readings.

Fits

This is an oxygen sensor for the 2001 Infiniti QX4 V6 3.5L. The listing is one sensor for the downstream left position, and that engine takes one in this position.

Specifications

In the box

One oxygen sensor with its wiring harness. A mounting bracket is not included.

Installation notes

• Conductive anti-seize is pre-applied to the threads.
• The connectors plug in directly.