Walker Products 350-341018 oxygen sensor for the 2014-2020 Mini Cooper 4-cylinder 2.0L, the 2014-2021 Cooper 3-cylinder 1.5L and other vehicles measures the oxygen content of the exhaust gas. This 4-wire, narrow-band sensor is a direct-fit part made for its specific position, and it gives the ECU the diagnostic feedback it expects.
- Electrodes made of 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
- Measures oxygen levels to fine-tune the air-fuel mixture and support fuel economy
Quick facts
- Part: Walker Products 350-341018 oxygen sensor
- Fits: 2014-2020 Mini Cooper 4-cylinder 2.0L, the 2014-2021 Cooper 3-cylinder 1.5L and other vehicles
- Position: Downstream
- Condition: New
A failing sensor can show up as a poorly running engine, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. These signs alone do not prove the sensor is at fault; an exhaust leak near it is another common cause. With the engine off and cool, the sensor, wiring harness and connector can also be inspected for physical damage.
Fits
The 2017-2020 Mini Cooper Countryman 4-cylinder 2.0L, the 2017-2024 Cooper Countryman 3-cylinder 1.5L and the 2018-2023 BMW X2 4-cylinder 2.0L take this sensor too, and so do more cars. If your car is not named here, look up its year and engine under the "Vehicles it fits" section. This listing is one sensor, and the 2014-2020 Mini Cooper 4-cylinder 2.0L takes one.
Specifications
Fit and size
- Position: downstream
- Quantity per vehicle: 1
- Thread: M18 - 1.5
Build and materials
- Type: narrow-band, 4-wire
- Electrodes: gas-permeable platinum layer
- Condition: new
Frequently Asked Questions
Is this the right oxygen sensor for a 2014-2020 Mini Cooper 4-cylinder 2.0L?
Yes. Walker Products 350-341018 fits the 2014-2020 Mini Cooper 4-cylinder 2.0L and the 2014-2021 Cooper 3-cylinder 1.5L, and the "Vehicles it fits" section covers other cars.
Is the Walker Products oxygen sensor narrow-band or wideband?
It is narrow-band. Walker Products 350-341018 is a 4-wire narrow-band sensor made as a direct-fit part for its application.
What protects the electrodes on this oxygen sensor?
A coating on the electrodes prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases. The electrodes themselves use a gas-permeable platinum layer.
What can a failing downstream oxygen sensor look like?
It can show up as a poorly running engine, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. With the engine off and cool, the sensor, wiring harness and connector can be inspected for physical damage.
Is Walker Products 350-341018 an upstream or downstream sensor?
It is a downstream sensor. This listing is one oxygen sensor, and a vehicle this part fits takes one.
