Walker Products 250-241269 oxygen sensor for the 2017-2018 Chevrolet Silverado 1500 V8 5.3L, the 2019-2024 Silverado 1500 4-cylinder 2.7L and other vehicles measures the oxygen in the exhaust gas to track combustion efficiency. This Walker Products oxygen sensor is a four-wire, narrow-band, direct-fit unit made for its specific application and fitment position.
- Measures oxygen levels in the exhaust to help fine-tune the air-fuel mixture and support fuel economy
- Monitors exhaust gases to help reduce pollutants
- Reads exhaust oxygen content to track the air-fuel ratio for combustion efficiency
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
- Electrodes made of a gas-permeable platinum layer
Quick facts
- Part: Walker Products 250-241269 oxygen sensor
- Fits: 2017-2018 Chevrolet Silverado 1500 V8 5.3L, the 2019-2024 Silverado 1500 4-cylinder 2.7L and other vehicles
- Position: Downstream, upstream right, downstream left, downstream right, downstream front, downstream rear
- Condition: New
A failing sensor can show up as an engine that runs poorly, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. Before you replace the sensor, rule out physical damage to its wiring harness and connector, which can also shorten the sensor's life.
Fits
It is a direct-fit oxygen sensor for a wide range of Chevrolet, GMC, Cadillac and Buick models, including the 2016-2020 Chevrolet Tahoe V8 5.3L and the 2018-2020 Tahoe V8 6.2L, and it works as an oxygen sensor for the 2020-2021 GMC Acadia 4-cylinder 2.0L. This listing is one sensor, and each fitment entry calls for a single sensor in its position.
Specifications
Fit and size
- Position: Downstream, upstream right, downstream left, downstream right, downstream front, downstream rear
- Quantity per application: 1
- Number of wires: 4
Build and materials
- Type: narrow-band, direct fit
- Electrodes: gas-permeable platinum layer
- Coating: protects the electrode surfaces
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Does this Chevy Tahoe oxygen sensor fit the 2016-2020 Tahoe V8 5.3L?
Yes. Walker Products 250-241269 is listed for the 2016-2020 Chevrolet Tahoe V8 5.3L and the 2018-2020 Tahoe V8 6.2L. For another model, look up your year and engine in the "Vehicles it fits" section.
Is this a Chevy Silverado 1500 oxygen sensor for the 2019-2024 model with the 4-cylinder 2.7L?
Yes. Walker Products 250-241269 is listed for the 2019-2024 Chevrolet Silverado 1500 4-cylinder 2.7L and the 2017-2018 Silverado 1500 V8 5.3L, one sensor per application.
Is this four-wire oxygen sensor narrow-band or wideband?
It is a narrow-band sensor with four wires and a direct-fit design. It is made for a specific application and fitment position and gives the ECU the diagnostic feedback it needs.
What signs can a failing narrow-band oxygen sensor show?
The engine can run poorly, fuel consumption or exhaust emissions can rise, or the malfunction indicator light can come on. A shop can read the stored fault codes to see whether the sensor is involved.
What does the coating on this oxygen sensor's electrodes do?
The coating guards the electrode surfaces against contamination and erosion from combustion residue and particulates in the exhaust. The electrodes themselves are made of a gas-permeable platinum layer.
