Walker Products 350-34212 oxygen sensor for the 2000-2001 Subaru Outback H4 2.5L and other vehicles measures the oxygen in the exhaust gas so combustion efficiency can be monitored. It is made for its specific application and downstream position.
- Narrow-band sensor with four wires
- Monitors exhaust gases to help reduce pollutants
- Measures oxygen in the exhaust to monitor the air-fuel ratio and help fine-tune the mixture for fuel economy
- Sends the ECU the diagnostic feedback its specific application and position require
- Electrodes made of a gas-permeable platinum layer
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and exhaust particulates
Quick facts
- Part: Walker Products 350-34212 oxygen sensor
- Fits: 2000-2001 Subaru Outback H4 2.5L and other vehicles
- Position: Downstream
- Condition: New
A damaged wiring harness or connector, or another fault in the engine management system, can also cause poor running, higher fuel consumption, more exhaust emissions or a malfunction indicator light. Find the cause before buying; if this sensor is the cause, this one replaces it.
Fits
This downstream oxygen sensor fits the 2000-2001 Subaru Outback H4 2.5L, the 1999 Subaru Legacy H4 2.2L and 2000-2001 Legacy H4 2.5L, and the 1999-2001 Subaru Impreza H4 2.2L. If your car is not one of those, open the "Vehicles it fits" section and check your exact model and engine.
Specifications
Fit and size
- Position: Downstream
- Quantity per vehicle: 1
- Wires: 4
- Thread: M18 - 1.5
Build and materials
- Type: Narrow-band
- Electrodes: gas-permeable platinum layer
- Condition: New
In the box
One oxygen sensor. The application calls for one sensor in this downstream position.
Frequently Asked Questions
Is Walker Products 350-34212 a Subaru Outback oxygen sensor replacement for the 2000-2001 model with the H4 2.5L engine?
Yes. Walker Products 350-34212 is a downstream oxygen sensor for the 2000-2001 Subaru Outback H4 2.5L, and that application takes one.
Is there a Subaru Impreza oxygen sensor here for the 1999-2001 Impreza H4 2.2L?
Yes. This downstream oxygen sensor fits the 1999-2001 Subaru Impreza H4 2.2L. Open the "Vehicles it fits" section to check other models and engines.
What type of oxygen sensor is Walker Products 350-34212?
Walker Products 350-34212 is a narrow-band oxygen sensor with four wires for the downstream position. Its electrodes are made of a gas-permeable platinum layer.
What can a failing downstream oxygen sensor do to the engine?
A failed sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the malfunction indicator light. Newer vehicles store fault codes in the ECU, and a shop can read them.
What does the coating on this oxygen sensor's electrodes do?
The coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases. The electrodes themselves are a gas-permeable platinum layer.
