Walker Products 250-24012 oxygen sensor for the 1999-2002 Chevrolet Silverado 1500 V6 4.3L, V8 4.8L or 5.3L and other vehicles measures the oxygen in the exhaust gas to track combustion efficiency. It sends the ECU the diagnostic feedback it requires.
- Monitors exhaust gases and helps reduce pollutants
- Measures oxygen levels so the air-fuel mixture can be fine-tuned, which supports normal fuel economy
- Determines the oxygen content of the exhaust gas to monitor the air fuel ratio
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Electrodes made of a gas-permeable platinum layer
Quick facts
- Part: Walker Products 250-24012 oxygen sensor
- Fits: 1999-2002 Chevrolet Silverado 1500 V6 4.3L, V8 4.8L or 5.3L and other vehicles
- Condition: New
A failing oxygen sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or light the malfunction indicator light. Those signs alone don't prove the sensor is at fault, since a vacuum leak can produce them too. Look over the sensor, wiring harness and connector for physical damage.
Fits
This sensor is listed for a wide range of Chevrolet, GMC, Buick and Pontiac models, led by the 1996-1999 Chevrolet Tahoe V8 5.7L, the 2000-2002 Tahoe V8 4.8L or 5.3L and the 1999-2002 GMC Sierra 1500 V6 4.3L, V8 4.8L or 5.3L. The listing is one sensor, and the 1999-2002 Chevrolet Silverado 1500 V6 4.3L, V8 4.8L or 5.3L takes one. Open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Quantity per vehicle: 1
- Thread size: M18 - 1.5
- Wires: 4
Build and materials
- Type: narrow-band, direct fit
- Coating: electrode surfaces
- Electrodes: gas-permeable platinum layer
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Will this Chevy Tahoe oxygen sensor work on a 1996-1999 Tahoe V8 5.7L?
Yes. Walker Products 250-24012 is listed for the 1996-1999 Chevrolet Tahoe V8 5.7L and the 2000-2002 Tahoe V8 4.8L or 5.3L.
Is this Chevy Silverado 1500 oxygen sensor right for a 1999-2002 Silverado with the V6 4.3L?
Yes. Walker Products 250-24012 is listed for the 1999-2002 Chevrolet Silverado 1500 V6 4.3L, V8 4.8L or 5.3L. For other models, open the "Vehicles it fits" section and check your exact engine.
What thread size and wire count does this narrow-band oxygen sensor have?
This narrow-band sensor has an M18 - 1.5 thread and four wires.
What does the coating on this oxygen sensor's electrodes protect against?
The electrodes are made of a gas-permeable platinum layer. A coating over the electrode surfaces keeps combustion residue and particulates in the exhaust from contaminating or eroding them.
Can a failing oxygen sensor store a fault code in the ECU?
Yes. Newer vehicles store fault codes in the ECU, and some relate to the affected sensor and its associated systems. A shop can read them.
