Rear Oxygen Sensor for 2004-2010 Toyota Sienna - Walker 250-24645

Walker Products 250-24645 rear oxygen sensor for the 2004-2006 Toyota Sienna V6 3.3L and the 2007-2010 Sienna V6 3.5L measures the oxygen in the exhaust gas to show combustion efficiency. It is a 4-wire, direct-fit, narrow-band sensor.

• Monitors exhaust gases to support lower emissions
• Electrodes made of a gas-permeable platinum layer
• Measures oxygen levels so the air-fuel mixture can be fine-tuned for fuel economy
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Made for its specific application and position on the vehicle, with the diagnostic feedback the ECU needs

Quick facts

• Part: Walker Products 250-24645 oxygen sensor
• Fits: the 2004-2006 Toyota Sienna V6 3.3L and the 2007-2010 Sienna V6 3.5L
• Position: Downstream rear
• Condition: New

A failing sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit check engine light. A vacuum leak can also make an engine run poorly, so these signs alone do not prove the sensor is at fault. With the engine off and cool, you can inspect the sensor, wiring harness and connector for physical damage.

Fits

This sensor fits the 2004-2006 Toyota Sienna V6 3.3L, the 2007-2010 Sienna V6 3.5L and the 2015-2016 Sienna V6 3.5L. This listing is one sensor for the downstream rear position, and that position takes one.

Specifications