Oxygen Sensor for 2011-2017 BMW X3 & More - Walker 250-24991

Walker Products 250-24991 oxygen sensor for the 2011-2017 BMW X3 6-cylinder 3.0L and other vehicles measures the oxygen in the exhaust gas to track combustion efficiency. This Walker Products oxygen sensor goes in the downstream position and is a 4-wire narrow-band unit.

• Determines the oxygen content of the exhaust gas and monitors the air fuel ratio for combustion efficiency
• Electrodes made of a gas-permeable platinum layer
• Electrode coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases
• Monitors exhaust gases to help reduce pollutants
• Measures oxygen levels to help fine-tune the air-fuel ratio and fuel economy

Quick facts

• Part: Walker Products 250-24991 oxygen sensor
• Fits: 2011-2017 BMW X3 6-cylinder 3.0L and other vehicles
• Position: Downstream
• Condition: New

A failing sensor can show up as rough running, higher fuel use or a lit malfunction indicator light. The upstream oxygen sensor, the wiring harness and the connector can be behind those signs too, so find the cause before buying; the harness and connector can be checked for physical damage.

Fits

The 2011-2017 BMW X3 6-cylinder 3.0L, the 2012-2017 BMW 640i 6-cylinder 3.0L and the 2013-2017 BMW 640i Gran Coupe 6-cylinder 3.0L all take this direct-fit oxygen sensor, and so do other vehicles. If your BMW is not named here, look it up by year and engine in the "Vehicles it fits" section. This listing is one sensor, and the 2012-2017 BMW 640i 6-cylinder 3.0L takes one.

Specifications