Walker Products 350-34402 oxygen sensor for the 2000-2004 Toyota Tundra V6 3.4L or V8 4.7L and other vehicles measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. Each part number is built for one application and fitment position, and it gives the ECU the diagnostic feedback it expects.
- Narrow-band sensor with four wires and a flange
- Helps fine-tune the air-fuel mixture for fuel economy
- Electrodes made with 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
Quick facts
- Part: Walker Products 350-34402 oxygen sensor
- Fits: the 2000-2004 Toyota Tundra V6 3.4L or V8 4.7L and other vehicles
- Position: upstream, downstream, upstream left, upstream right, downstream left, downstream right
- Condition: New
A failing oxygen sensor can show up as rough running, higher fuel use, more exhaust emissions or a lit check engine light. Those signs can have other causes, so with the engine off and cool, look the sensor, its wiring harness and its connector over for physical damage first.
Fits
Among the popular fits for this oxygen sensor are the 1995-2000 Toyota Tacoma 4-cylinder 2.4L, 2.7L or V6 3.4L and the 2001-2004 Toyota Sequoia V8 4.7L. This listing is one sensor, and each fitted position takes one. If your vehicle is not named here, look up its year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: upstream, downstream, upstream left, upstream right, downstream left, downstream right
- Quantity per application: 1
Build and materials
- Type: narrow-band oxygen sensor
- Wires: 4
- Mounting: flange
- Condition: New
Interchange: CTK-OSTO4004
Frequently Asked Questions
Is Walker Products 350-34402 the right Toyota Tacoma oxygen sensor for a 1995-2000 Tacoma 4-cylinder 2.4L, 2.7L or V6 3.4L?
Yes. Walker Products 350-34402 fits the 1995-2000 Toyota Tacoma with the 4-cylinder 2.4L, 2.7L or V6 3.4L engine, and each of those takes one sensor.
Will this O2 sensor fit a 2004 Toyota Tundra V6 3.4L or V8 4.7L?
Yes. Walker Products 350-34402 fits the 2000-2004 Toyota Tundra with either the V6 3.4L or the V8 4.7L engine.
Is this oxygen sensor narrow-band or wideband?
This oxygen sensor is a narrow-band design with four wires and a flange.
What can a worn narrow-band oxygen sensor do to my engine?
A failing sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the malfunction indicator light. A shop can read the stored fault codes.
Is CTK-OSTO4004 an interchange number for this oxygen sensor?
Yes. CTK-OSTO4004 is listed as an interchange number for this oxygen sensor, which is Walker Products 350-34402.
