Left Oxygen Sensor for 2019-2021 BMW M2 & More - Walker 250-25123

Walker Products 250-25123 left oxygen sensor for the 2019-2021 BMW M2 6-cylinder 3.0L and other vehicles gives the engine computer the exhaust-oxygen feedback it needs. Each part number is made for its specific application and fitment position.

• Measures oxygen content in the exhaust gas to monitor the air-fuel ratio for combustion efficiency
• Electrodes with a gas-permeable platinum layer
• Oxygen readings let the air-fuel mixture be fine-tuned, which helps fuel economy
• Monitors exhaust gases to help reduce pollutants
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates

Quick facts

• Part: Walker Products 250-25123 oxygen sensor
• Fits: 2019-2021 BMW M2 6-cylinder 3.0L and other vehicles
• Position: Upstream, upstream left
• Condition: New

Rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light can mean the sensor is worn, though a damaged wiring harness or connector can be behind the same signs, so look those over for physical damage first.

Fits

This is an OE-replacement sensor for the 2019-2021 BMW M2 6-cylinder 3.0L, the 2015-2020 BMW M4 6-cylinder 3.0L and the 2015-2018 BMW M3 6-cylinder 3.0L. This listing is one sensor for the upstream left position, and the 2015-2020 BMW M4 6-cylinder 3.0L takes one.

Specifications

Product information is for general reference and may contain errors. See our Disclaimer.