Oxygen Sensor for 2004-2006 BMW X3 & More - Bosch 15109

Bosch 15109 oxygen sensor for the 2004-2006 BMW X3 6-cylinder 2.5L or 3.0L and other vehicles reads the oxygen in the exhaust and reports it to the ECU. This downstream, heated narrow-band sensor helps the engine hold a stable air-fuel ratio and keep emissions down.

• Advanced ceramic element and integrated heater element for consistent readings under thermal and vibration loads
• Metal housing and TSP coating that resist vibration, corrosion and contamination
• Withstands exhaust streams up to 1,880°F
• Reaches operating temperature in under 10 seconds for quick closed-loop control

Quick facts

• Part: Bosch 15109 oxygen sensor
• Fits: 2004-2006 BMW X3 6-cylinder 2.5L or 3.0L and other vehicles
• Position: Downstream
• Material: Metal housing
• Condition: New

A lit check engine light, poorer fuel economy or a rough idle can mean the sensor is worn, though a failing catalytic converter or a damaged wiring harness can also be behind them, so sort out which one it is before you replace anything.

Fits

It is listed for a wide range of BMW models, led by the 2004-2006 BMW X3 6-cylinder 2.5L or 3.0L, the 2001-2006 BMW X5 6-cylinder 3.0L and the 2003-2005 BMW Z4 6-cylinder 2.5L or 3.0L. If your car is not one of these, look up its year and engine in the "Vehicles it fits" section. This listing is one sensor, and the 2001-2006 BMW X5 6-cylinder 3.0L takes two.

Specifications

In the box

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

Installation notes

• Pre-applied conductive anti-seize on the threads
• Direct-fit connectors for quick installation