Walker Products 250-24269 oxygen sensor for the 2007-2013 GMC Sierra V8 5.3L and other vehicles measures the amount of oxygen in the exhaust gas. That reading shows combustion efficiency and gives the ECU the diagnostic feedback it expects from this application.
- Electrodes made of a gas-permeable platinum layer
- Measures oxygen levels so the air-fuel mixture can be fine-tuned for fuel economy
- Monitors the air-fuel ratio in the exhaust gas for combustion efficiency
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Monitors exhaust gases and helps reduce pollutants
Quick facts
- Part: Walker Products 250-24269 oxygen sensor
- Fits: 2007-2013 GMC Sierra V8 5.3L and other vehicles
- Position: upstream, downstream, upstream left, upstream right, downstream left, downstream right, upstream rear or upstream front, depending on the application
- Condition: New
A poorly running engine, higher fuel consumption or a lit malfunction indicator light can mean the sensor is worn, though the wiring harness or connector can also be behind them. With the engine off and cool, look over the sensor, harness and connector for physical damage. This listing is one sensor, and the 2007-2013 GMC Sierra V8 5.3L takes one.
Fits
This direct-fit sensor is listed for a wide range of Chevrolet, GMC, Cadillac, Buick, Oldsmobile, Pontiac and Isuzu models, among them the 2007-2013 GMC Sierra V8 5.3L, the 2001-2003 Chevrolet Malibu V6 3.1L and the 2000-2002 Chevrolet Silverado 1500 V8 4.8L or 5.3L. That includes an oxygen sensor for the 2008 GMC Sierra V8 5.3L.
Specifications
Fit and size
- Position: upstream, downstream, upstream left, upstream right, downstream left, downstream right, upstream rear or upstream front, depending on the application
- Quantity per application: 1
Build and materials
- Type: narrow-band
- Wires: 4
- Condition: New
Frequently Asked Questions
Is this O2 sensor right for a 2007-2013 GMC Sierra V8 5.3L?
Yes. Walker Products 250-24269 is listed for the 2007-2013 GMC Sierra V8 5.3L. If your car is not one named on this page, look it up in the "Vehicles it fits" section.
Is this a Malibu oxygen sensor for the 2001-2003 Chevrolet Malibu V6 3.1L?
Yes. The 2001-2003 Chevrolet Malibu V6 3.1L is listed for this sensor, and it takes one.
Is the Walker Products 250-24269 a narrow-band sensor?
Yes. Walker Products 250-24269 is a narrow-band, 4-wire oxygen sensor that measures the oxygen content of the exhaust gas.
What does the coating on this oxygen sensor protect?
The coating keeps combustion residue and particulates in the exhaust from contaminating or eroding the electrode surfaces. The electrodes are made of a gas-permeable platinum layer.
Can a worn oxygen sensor really raise fuel consumption?
Yes, a failing sensor can increase fuel consumption, make the engine run poorly or light the malfunction indicator light. A shop can read the fault codes the ECU stores.
