Oxygen Sensor for 1999-2004 Subaru Forester & More - Walker 250-24295

Walker Products 250-24295 oxygen sensor for the 1999-2004 Subaru Forester H4 2.5L and other vehicles measures the oxygen content of the exhaust gas. It is a downstream, 4-wire narrow-band sensor made for its specific application and fitment position, and it gives the ECU the diagnostic feedback it needs.

• Monitors exhaust gases to help reduce pollutants
• Tracks the air-fuel ratio by measuring the oxygen content of the exhaust gas
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Electrodes made of a gas-permeable platinum layer
• Measures oxygen levels to help fine-tune the air-fuel mixture for fuel economy

Quick facts

• Part: Walker Products 250-24295 oxygen sensor
• Fits: 1999-2004 Subaru Forester H4 2.5L and other vehicles
• Position: Downstream
• Condition: New

A failing sensor can show up as the engine running poorly, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. Before you replace the sensor, rule out physical damage to the sensor itself, its wiring harness and its connector.

Fits

This oxygen sensor also fits the 1999 Subaru Impreza H4 2.2L and the 1999-2004 Impreza H4 2.5L. The 1999-2004 Subaru Forester H4 2.5L takes one, and this listing is one sensor.

Specifications