Oxygen Sensor for 2017-2019 Audi A4 & More - Walker 250-241143

Walker Products 250-241143 oxygen sensor for the 2017-2019 Audi A4 4-cylinder 2.0L and other vehicles measures the oxygen in the exhaust gas at the downstream position.

• Narrow-band, 4-wire design for the downstream position
• Electrodes made of a gas-permeable platinum layer
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Measures oxygen levels so the air-fuel mixture can be fine-tuned, which supports fuel economy
• Each part number is made for a specific application and fitment position and gives the ECU the diagnostic feedback it expects

Quick facts

• Part: Walker Products 250-241143 oxygen sensor
• Fits: 2017-2019 Audi A4 4-cylinder 2.0L 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. Those signs can have other sources, so with the engine off and cool, look the sensor, wiring harness and connector over for physical damage first. If this sensor is the cause, this one replaces it. Each application takes one at this position, and this listing is one sensor.

Fits

The 2017-2019 Audi A4 4-cylinder 2.0L, the 2013-2014 Volkswagen Jetta 4-cylinder 1.4L and the 2017-2019 Audi A4 Allroad 4-cylinder 2.0L are among the many vehicles this sensor fits. Open the "Vehicles it fits" section to check your exact model and engine.

Specifications

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