Walker Products 250-24914 oxygen sensor for the 2011-2012 Toyota Sienna 4-cylinder 2.7L and the 2011-2015 Sienna V6 3.5L measures the oxygen in the exhaust gas to show how efficiently the engine is burning fuel. This downstream sensor is a 4-wire, narrow-band, direct-fit unit.
- Electrodes made of a gas-permeable platinum layer
- Determines the oxygen content of the exhaust gas to monitor the air-fuel ratio
- Electrode coating that resists contamination and erosion from combustion residue and particulates
- Oxygen readings that help fine-tune the air-fuel mixture for fuel economy
- Exhaust gas monitoring that helps reduce pollutants
Quick facts
- Part: Walker Products 250-24914 oxygen sensor
- Fits: the 2011-2012 Toyota Sienna 4-cylinder 2.7L and the 2011-2015 Sienna V6 3.5L
- Position: Downstream
- Condition: New
A failing sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. The wiring harness and connector can be behind the same signs, so find the cause before buying. With the engine off, look the sensor, harness and connector over for physical damage.
Fits
This sensor is a direct-fit replacement for the 2011-2012 Toyota Sienna 4-cylinder 2.7L and the 2011-2015 Sienna V6 3.5L.
Specifications
Fit and size
- Position: downstream
- Quantity per vehicle: 1
- Number of wires: 4
Build and materials
- Type: narrow-band, direct fit
- Electrodes: gas-permeable platinum layer
- Condition: New
In the box
One oxygen sensor. This listing is a single sensor, and the engines listed each take one.
Frequently Asked Questions
Is this the right oxygen sensor for a 2011 Toyota Sienna?
Yes. Walker Products 250-24914 fits the 2011-2012 Toyota Sienna 4-cylinder 2.7L and the 2011-2015 Sienna V6 3.5L, so a 2011 model with either engine is covered.
Is the Walker Products 250-24914 a wideband or narrow-band sensor?
It is a narrow-band sensor. Walker Products 250-24914 is a 4-wire, direct-fit oxygen sensor that determines the oxygen content of the exhaust gas.
Is this oxygen sensor upstream or downstream?
It is a downstream sensor. The catalog lists its position as downstream, downstream front or downstream rear.
Which signs can point to a failed oxygen sensor?
A failed sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the malfunction indicator light. Newer vehicles also store fault codes in the ECU, some related to the sensor.
Are the electrodes on this Walker Products oxygen sensor coated?
Yes. The electrodes are made of a gas-permeable platinum layer, and the coating protects their surfaces from contamination and erosion by combustion residue and particulates in the exhaust.
