Walker Products 350-34047 oxygen sensor for the 2004-2005 Chevrolet Colorado 4-cylinder 2.8L or 5-cylinder 3.5L and other vehicles reads the exhaust gas for its oxygen level. Each part number is made for its specific application and fitment position, and it supplies the diagnostic feedback the ECU needs.
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
- Determines the oxygen content of the exhaust gas to monitor the air-fuel ratio for combustion efficiency
- Monitors exhaust gases to help reduce pollutants
- Electrodes with a gas-permeable platinum layer
- Measures oxygen levels so the air-fuel mixture can be fine-tuned for fuel economy
Quick facts
- Part: Walker Products 350-34047 oxygen sensor
- Fits: the 2004-2005 Chevrolet Colorado 4-cylinder 2.8L or 5-cylinder 3.5L and other vehicles
- Position: Upstream
A worn sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light, though other faults cause the same signs. Before you replace the sensor, rule out physical damage to its wiring harness and connector, and have the ECU's stored fault codes read.
Fits
The listing covers a wide range of Chevrolet, GMC and other makes' models, such as the oxygen sensor for the 2004-2005 GMC Canyon 4-cylinder 2.8L or 5-cylinder 3.5L and for the 2004-2005 Chevrolet Trailblazer 6-cylinder 4.2L. Each of these takes one. If your vehicle isn't named here, look up your year, model and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: Upstream
- Quantity per vehicle: 1
- Thread size: M18 - 1.5
Build and materials
- Type: Narrow-band
- Number of wires: 4
- Electrodes: gas-permeable platinum layer
- Installation: direct fit
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right oxygen sensor for a 2004-2005 Chevy Colorado 4-cylinder 2.8L or 5-cylinder 3.5L?
Yes. Walker Products 350-34047 is listed for the 2004-2005 Chevrolet Colorado with either the 4-cylinder 2.8L or the 5-cylinder 3.5L, in the upstream position.
Will this oxygen sensor work in a 2004-2005 Chevy Trailblazer 6-cylinder 4.2L?
Yes. The 2004-2005 Chevrolet Trailblazer 6-cylinder 4.2L is listed, and it takes one of these sensors.
What thread and wire count does the Walker Products 350-34047 have?
Walker Products 350-34047 is a narrow-band oxygen sensor with four wires and an M18 - 1.5 thread.
Is this an upstream or downstream oxygen sensor?
Upstream. This Walker Products listing is one oxygen sensor for the upstream position, and each vehicle it fits takes one.
What does the coating on this oxygen sensor protect?
The coating shields the electrode surfaces from contamination and erosion caused by combustion residue and particulates in the exhaust. The electrodes carry a gas-permeable platinum layer.
