Walker Products 350-34641 oxygen sensor for the 2001-2003 Toyota Prius 4-cylinder 1.5L and other vehicles measures the oxygen in the exhaust gas so combustion efficiency can be monitored. Built for its specific application and fitment position, it gives the ECU the diagnostic feedback it expects.
- Electrodes with a gas-permeable platinum layer
- Determines the oxygen content of the exhaust gas to monitor the air-fuel ratio
- Coating that prevents contamination and erosion of the electrode surfaces by combustion residue and particulates
- Narrow-band, 4-wire direct-fit design
- Monitors exhaust gases to help reduce pollutants
Quick facts
- Part: Walker Products 350-34641 oxygen sensor
- Fits: 2001-2003 Toyota Prius 4-cylinder 1.5L and other vehicles
- Position: Upstream, downstream, downstream left, downstream right, downstream front
- Condition: New
A worn sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light, though damage to the wiring harness or connector may be behind those signs instead. This listing is one sensor, and the 2001-2003 Toyota Prius 4-cylinder 1.5L takes one.
Fits
This is an oxygen sensor for the 2001-2003 Toyota Prius 4-cylinder 1.5L, the 1992-1996 Toyota Camry V6 3.0L and the 2006-2015 Toyota Yaris 4-cylinder 1.5L. If your car isn't named here, enter its year, make and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: upstream, downstream, downstream left, downstream right, downstream front
- Quantity per vehicle: 1
- Thread size: M18 - 1.5
Build and materials
- Type: narrow-band, 4-wire, direct fit
- Electrodes: gas-permeable platinum layer
- Condition: New
Interchange: CTK-OSTO4012
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this a Toyota Camry oxygen sensor for 1992-1996 models with the V6 3.0L?
Yes. Walker Products 350-34641 fits the 1992-1996 Toyota Camry V6 3.0L, and that engine takes one sensor.
Is this the Prius O2 sensor for 2001-2003 models with the 4-cylinder 1.5L?
Yes. This 4-wire narrow-band sensor fits the 2001-2003 Toyota Prius 4-cylinder 1.5L, and one sensor is needed.
Is the Walker Products 350-34641 a narrow-band or wideband oxygen sensor?
Walker Products 350-34641 is a narrow-band oxygen sensor with four wires and an M18 - 1.5 thread.
How can I tell whether this oxygen sensor is physically damaged?
With the engine off and cool, look over the sensor, wiring harness and connector for physical damage. A shop can read the stored fault codes, which may relate to the sensor and its systems.
What keeps deposits from fouling the electrodes on this oxygen sensor?
A coating on the electrode surfaces prevents contamination and erosion from combustion residue and particulates in the exhaust gas.
