Front Oxygen Sensor for 2001-2003 Toyota Highlander & More - Walker 350-34589

Walker Products 350-34589 front oxygen sensor for the 2001-2003 Toyota Highlander V6 3.0L and other vehicles reads the oxygen in the exhaust gas so the engine computer can judge combustion efficiency. Each Walker Products sensor number is made for its specific application and fitment position, and it gives the ECU the diagnostic feedback it needs.

• Narrow-band sensor with 4 wires and a flange mount
• Measures oxygen levels so the air-fuel mixture can be fine-tuned for fuel economy
• Monitors exhaust gases to help reduce pollutants
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Electrodes made of a gas-permeable platinum layer

Quick facts

• Part: Walker Products 350-34589 oxygen sensor
• Fits: 2001-2003 Toyota Highlander V6 3.0L and other vehicles
• Position: Downstream, downstream front
• Condition: New

A failing oxygen sensor can show up as rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light. A damaged wiring harness or connector, an exhaust leak or a fuel or ignition fault can produce the same signs, so find the cause before you buy a sensor.

Fits

This oxygen sensor fits the 2001-2003 Toyota Highlander V6 3.0L, the 1999-2003 Lexus RX300 V6 3.0L and the 1993-1998 Toyota Supra 6-cylinder 3.0L. The listing is one sensor, and a 2001-2003 Toyota Highlander V6 3.0L takes one.

Specifications