Walker Products 250-25043 oxygen sensor for the 2009-2015 Mercedes-Benz G550 V8 5.5L and other vehicles measures the oxygen in the exhaust gas. Each part number is made for its specific application and fitment position, and it gives the ECU the diagnostic feedback it requires.
- Air-fuel ratio monitoring for combustion efficiency
- Oxygen readings let the air-fuel mixture be fine-tuned for fuel economy
- Electrodes with a gas-permeable platinum layer
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
- Monitors exhaust gases to help reduce pollutants
Quick facts
- Part: Walker Products 250-25043 oxygen sensor
- Fits: 2009-2015 Mercedes-Benz G550 V8 5.5L and other vehicles
- Position: Center, upstream, downstream, upstream left, upstream right
- Condition: New
A rough-running engine, higher fuel use or a lit malfunction indicator light can mean the sensor is failing, though damage to the wiring harness or connector can be behind the same signs, so look both over for physical damage too.
Fits
The 2009-2015 Mercedes-Benz G550 V8 5.5L, the 2019-2024 Mercedes-Benz G63 AMG V8 4.0L and the 2020-2024 Mercedes-Benz GLE580 V8 4.0L are among the vehicles this sensor fits, along with many more. This listing is one sensor, and the 2019-2024 Mercedes-Benz G63 AMG V8 4.0L takes one.
Specifications
Fit and size
- Position: Center, upstream, downstream, upstream left, upstream right
- Quantity per vehicle: 1
- Thread: M18 - 1.5
Build and materials
- Type: wide-band, 5-W
- Electrodes: gas-permeable platinum layer
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Does the Walker Products 250-25043 oxygen sensor fit the 2019-2024 Mercedes-Benz G63 AMG V8 4.0L?
Yes. Walker Products 250-25043 fits the 2019-2024 Mercedes-Benz G63 AMG V8 4.0L and the 2020-2024 Mercedes-Benz GLE580 V8 4.0L. To check your own car, look up its year and engine in the "Vehicles it fits" section.
Is this Walker Products oxygen sensor wide-band?
Yes. Walker Products 250-25043 is a wide-band, 5-W sensor, and its electrodes have a gas-permeable platinum layer.
What thread does this oxygen sensor have?
This oxygen sensor has an M18 - 1.5 thread. The listing is one sensor.
Will a failing wide-band oxygen sensor set a fault code in the ECU?
Yes, it can on newer vehicles, which store fault codes in the ECU. Some of those codes relate to the affected sensor and its associated systems.
What does the coating on this oxygen sensor's electrodes do?
The coating shields the electrode surfaces from contamination and erosion caused by combustion residue and particulates in the exhaust gases.
