Front Oxygen Sensor for 2001-2003 Toyota Sienna - Walker 350-34055

Walker Products 350-34055 front oxygen sensor for the 2001-2003 Toyota Sienna V6 3.0L reads the oxygen content of the exhaust gas. This narrow-band, 4-wire sensor has a flange and gives the ECU the diagnostic feedback it needs.

• Monitors the air-fuel ratio to track combustion efficiency
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
• Electrodes made of a gas-permeable platinum layer
• Measures oxygen levels so the air-fuel mixture can be fine-tuned, which helps fuel economy
• Monitors exhaust gases to help reduce pollutants

Quick facts

• Part: Walker Products 350-34055 oxygen sensor
• Fits: 2001-2003 Toyota Sienna V6 3.0L
• Position: Downstream front
• Condition: New

A failed sensor might make the engine run poorly, raise fuel consumption and exhaust emissions, or turn on the malfunction indicator light. These signs alone do not prove the sensor is the problem; a vacuum leak, for example, can also make an engine run poorly. The sensor, wiring harness and connector should also be looked over for physical damage.

Fits

It is a direct-fit O2 sensor for the 2001-2003 Toyota Sienna V6 3.0L. This listing is one sensor, and the 2001-2003 Toyota Sienna V6 3.0L takes one.

Specifications

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