Rear Oxygen Sensor for 2001-2003 Toyota RAV4 - Walker 250-54078

Walker Products 250-54078 rear oxygen sensor for the 2001-2003 Toyota RAV4 4-cylinder 2.0L measures the oxygen in the exhaust gas to track combustion efficiency. The sensor is made for its specific application and fitting position and sends the ECU the diagnostic feedback it needs.

• Wide-band air-fuel ratio design with 4 wires
• Oxygen readings help fine-tune the air-fuel mixture and support fuel economy
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gas
• Electrodes made of a gas-permeable platinum layer
• Monitors exhaust gases to help reduce pollutants

Quick facts

• Part: Walker Products 250-54078 oxygen sensor
• Fits: 2001-2003 Toyota RAV4 4-cylinder 2.0L
• Position: Upstream rear
• Condition: New

A rough-running engine, higher fuel use, more exhaust emissions or a lit malfunction indicator light can mean a worn sensor, but those signs alone do not prove it. An exhaust leak near the sensor is another common cause.

Fits

This listing is one oxygen sensor, a direct-fit replacement for the 2001-2003 Toyota RAV4 4-cylinder 2.0L (L4-2.0L), which takes one.

Specifications