Left Oxygen Sensor for 2003-2006 Infiniti G35 & More - Bosch 15523

Bosch 15523 left oxygen sensor for the 2003-2006 Infiniti G35 V6 3.5L and other vehicles sends air-fuel-ratio readings from the exhaust to the ECU. This Bosch O2 sensor is a narrow-band heated unit that helps the ECU keep combustion stable and cut emissions.

• Narrow-band heated design with a ceramic element and optimized heater control
• Reaches operating temperature in under 10 seconds for quick closed-loop control
• Metal housing with TSP coating to resist vibration, corrosion and contamination
• Withstands exhaust gas temperatures up to 1,880°F

Quick facts

• Part: Bosch 15523 oxygen sensor
• Fits: 2003-2006 Infiniti G35 V6 3.5L and other vehicles
• Position: Downstream left
• Material: Metal (housing)
• Condition: New

A failing oxygen sensor can show up as a check engine light, rougher running or lower fuel economy. These signs alone do not prove the sensor is the problem, since an exhaust leak near it can also skew its readings. If the sensor is the cause, this one replaces the downstream left unit.

Fits

Vehicles it fits include the 2003-2006 Infiniti G35 V6 3.5L, the 2006-2010 Infiniti M45 V8 4.5L and the 2003-2008 Infiniti FX45 V8 4.5L, and the downstream left position takes one sensor. This listing is a single sensor; the other side is a separate part. For any other car, look up its year and engine in the "Vehicles it fits" section.

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.
• Direct-fit connectors for quick installation.