Oxygen Sensor for 2000-2004 Subaru Outback & More - Walker 350-34563

Walker Products 350-34563 oxygen sensor for the 2000-2004 Subaru Outback H4 2.5L and other vehicles measures exhaust-gas oxygen to show combustion efficiency. Every Walker part number is made for its specific application and fitment position, and it gives the ECU the diagnostic feedback it needs.

• Measures the oxygen content of the exhaust gas to monitor the air-fuel ratio
• Electrodes made of a gas-permeable platinum layer
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Narrow-band design with four wires
• Oxygen readings are used to fine-tune the air-fuel mixture for fuel economy

Quick facts

• Part: Walker Products 350-34563 oxygen sensor
• Fits: 2000-2004 Subaru Outback H4 2.5L and other vehicles
• Position: Downstream

A failing sensor can show up as rough running, higher fuel use or a lit malfunction indicator light, though a damaged wiring harness or connector can be behind the same signs, so look both over for physical damage with the engine off.

Fits

It is a direct-fit replacement for the 2000-2004 Subaru Outback H4 2.5L, the 1999 Subaru Legacy H4 2.2L and 1999-2004 Legacy H4 2.5L, and the 2003-2006 Subaru Baja H4 2.5L. These cars take one downstream sensor each, and this listing is a single sensor.

Specifications

Product information is for general reference and may contain errors. See our Disclaimer.