Oxygen Sensor for 2017-2021 BMW 230i & More - Walker 350-35142

Walker Products 350-35142 oxygen sensor for the 2017-2021 BMW 230i 4-cylinder 2.0L and other vehicles measures the oxygen in the exhaust gas. This upstream wide-band sensor monitors the air-fuel ratio for combustion efficiency.

• Monitors exhaust gases to help reduce pollutants
• Measures oxygen levels so the air-fuel ratio can be fine-tuned, helping fuel economy
• Electrodes made of a gas-permeable platinum layer
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases

Quick facts

• Part: Walker Products 350-35142 oxygen sensor
• Fits: 2017-2021 BMW 230i 4-cylinder 2.0L and other vehicles
• Position: Upstream
• Condition: New

A failing sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. Before you replace the sensor, look over its wiring harness and connector for physical damage, so that cause is ruled out first.

Fits

This upstream oxygen sensor is a direct-fit replacement for the 2017-2021 BMW 230i 4-cylinder 2.0L, the 2017-2021 BMW 230i xDrive 4-cylinder 2.0L and the 2018-2021 BMW X3 4-cylinder 2.0L, and each takes one. Driving a different BMW or another make? Look up your year and engine in the "Vehicles it fits" section.

Specifications