Oxygen Sensor for 2003-2006 BMW 325Ci & More - Walker 350-35081

Walker Products 350-35081 oxygen sensor for the 2003-2006 BMW 325Ci 6-cylinder 2.5L and other vehicles measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. This Walker Products oxygen sensor is a wide-band unit for the upstream position and gives the ECU the diagnostic feedback it needs.

• Measures oxygen levels to fine-tune the air-fuel mixture and help fuel economy
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Monitors exhaust gases to help reduce pollutants
• Electrodes made with a gas-permeable platinum layer

Quick facts

• Part: Walker Products 350-35081 oxygen sensor
• Fits: the 2003-2006 BMW 325Ci 6-cylinder 2.5L and other vehicles
• Position: Upstream
• Condition: New

A failing sensor can show up as rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light. Those signs alone do not prove the sensor is the problem, since a vacuum leak can also upset the air-fuel balance. The sensor, its wiring harness and the connector should also be checked for physical damage.

Fits

This listing is one oxygen sensor for the 2003-2006 BMW 325Ci 6-cylinder 2.5L, which takes one in the upstream position. It is also an oxygen sensor for the 2003-2006 BMW 330Ci 6-cylinder 3.0L and the 2004-2006 BMW X3 6-cylinder 3.0L, and it is listed for a wide range of other BMW models.

Specifications