Walker Products 350-341064 oxygen sensor for the 2019-2024 Chevrolet Silverado 1500 V8 5.3L, the 2020-2021 Silverado 1500 V6 4.3L, the 2020-2024 Silverado 1500 V8 6.2L and other vehicles measures the oxygen in the exhaust gas so the combustion efficiency can be monitored. Each Walker Products part number is made for a specific application and fitment position, and it gives the diagnostic feedback the ECU requires.
- Electrodes made of a gas-permeable platinum layer
- Monitors exhaust gases to help reduce pollutants
- 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 helps fuel economy
Quick facts
- Part: Walker Products 350-341064 oxygen sensor
- Fits: the 2019-2024 Chevrolet Silverado 1500 V8 5.3L, the 2020-2021 Silverado 1500 V6 4.3L, the 2020-2024 Silverado 1500 V8 6.2L and other vehicles
- Position: downstream, upstream left, upstream right, downstream left, downstream right, upstream rear, upstream front, downstream front, downstream rear
- Condition: New
A failing sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the malfunction indicator light. Those symptoms can come from other parts too, so track down the cause before you buy a new sensor. With the engine off and cool, look over the sensor, its wiring harness and the connector for physical damage.
Fits
Besides the Silverado, it is an oxygen sensor for the 2021-2024 Chevrolet Tahoe V8 5.3L or 6.2L and the 2019-2020 GMC Sierra V8 5.3L or 6.2L, among many other vehicles.
Specifications
Fit and size
- Position: downstream, upstream left, upstream right, downstream left, downstream right, upstream rear, upstream front, downstream front, downstream rear
- Quantity per vehicle: varies by application
- Thread size: M18 - 1.5
- Number of wires: 4
Build and materials
- Type: narrow-band
- Fit type: direct fit
- Electrodes: gas-permeable platinum layer
- Condition: new
In the box
One oxygen sensor. How many a vehicle takes varies by application, and most take one.
Frequently Asked Questions
Will this GMC Sierra oxygen sensor fit a 2019-2020 Sierra V8 5.3L or 6.2L?
Yes. Walker Products 350-341064 fits the 2019-2020 GMC Sierra V8 5.3L or 6.2L. If your vehicle is not one of those named on this page, look it up in the "Vehicles it fits" section.
Is this Chevy Silverado 1500 oxygen sensor the right one for a 2020-2021 V6 4.3L?
Yes. Walker Products 350-341064 fits the 2020-2021 Chevrolet Silverado 1500 V6 4.3L.
Is this Walker Products oxygen sensor narrow-band or wideband?
It is narrow-band. This is a 4-wire direct-fit sensor with an M18 - 1.5 thread.
What happens when the narrow-band oxygen sensor starts to fail?
The engine can run poorly, fuel consumption or exhaust emissions can rise, or the malfunction indicator light can come on. Newer vehicles can also store a fault code in the ECU.
Is this oxygen sensor for the upstream or downstream position?
It is listed for both upstream and downstream positions, including left, right, front and rear, depending on the application. The sensor is made for one specific application and position, so the position depends on the vehicle.
