Oxygen Sensor for 2017-2021 BMW M240i & More - Walker 250-25132

Walker Products 250-25132 oxygen sensor for the 2017-2021 BMW M240i 6-cylinder 3.0L and other vehicles measures the oxygen content of the exhaust gas. This upstream Walker Products oxygen sensor passes the diagnostic feedback the ECU requires.

• Electrodes coated with a gas-permeable platinum layer
• Monitors the air-fuel ratio for combustion efficiency
• Monitors exhaust gases to help reduce pollutants
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Oxygen readings let the ECU fine-tune the air-fuel mixture, which can improve fuel economy

Quick facts

• Part: Walker Products 250-25132 oxygen sensor
• Fits: 2017-2021 BMW M240i 6-cylinder 3.0L and other vehicles
• Position: Upstream
• Condition: New

A worn oxygen sensor can show up as a poorly running engine, higher fuel use, higher exhaust emissions or a lit check engine light. The sensor's wiring harness and connector can be behind the same signs, so look them over for damage with the engine off and cool before you replace the sensor.

Fits

The 2017-2021 BMW M240i 6-cylinder 3.0L, the 2017-2021 BMW M240i xDrive 6-cylinder 3.0L and the 2018-2021 BMW X3 6-cylinder 3.0L all take this sensor, as do many other BMW models. This listing is one sensor, and the quantity is one per vehicle. If your BMW is not named here, look up your year and engine in the "Vehicles it fits" section.

Specifications