Bosch 17321 oxygen sensor for the 2011-2014 Ford F-150 V8 5.0L or 6.2L, the 2011-2016 F-150 V6 3.5L and other vehicles measures the air-fuel ratio across the full lambda range and reports it to the ECU. It is a wide-band sensor, so the ECU gets continuous, high-precision readings with more detail than a traditional switching sensor gives.
- Ceramic construction with optimized heater control for fast light-off
- Reaches operating temperature in under 7 seconds for quick closed-loop control
- Metal housing with an integrated heater element and TSP coating; withstands exhaust streams up to 1,880°F
- Direct-fit connectors and pre-applied conductive anti-seize on the threads
Quick facts
- Part: Bosch 17321 oxygen sensor
- Fits: the 2011-2014 Ford F-150 V8 5.0L or 6.2L, the 2011-2016 F-150 V6 3.5L and other vehicles
- Position: Upstream, upstream left, upstream right
- Material: Metal housing
- Condition: New
A rough idle, poor fuel economy or a check engine light can mean the oxygen sensor is worn, but a mass airflow sensor or a fuel injector can also be behind them, so find the cause first. This listing is one sensor. The quantity depends on the vehicle: the 2013-2019 Ford Explorer V6 3.5L takes two, while each F-150 above takes one.
Fits
The same sensor is a Ford Focus oxygen sensor for the 2012-2013 Focus 4-cylinder 2.0L and fits the 2013-2019 Ford Explorer V6 3.5L, plus many other Ford and Lincoln models. If your car is not named here, open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Position: upstream, upstream left, upstream right
- Thread size: M18 - 1.5
- Hex size: 22 mm
- Overall length: 17.7 in
- Length (sealing surface to end of connector): 16.5 in
- Terminal quantity: 6
- Mounting type: Threaded
Build and materials
- Sensor type: wide-band
- Housing material: metal
- Wiring harness: included
- Condition: new
- Bosch warranty: 1 year, unlimited mileage, for non-commercial passenger cars and light trucks
In the box
One oxygen sensor with its wiring harness.
Frequently Asked Questions
Is Bosch 17321 a Ford F-150 oxygen sensor for the 2011-2014 F-150 V8 5.0L or 6.2L and the 2011-2016 F-150 V6 3.5L?
Yes. Bosch 17321 fits the 2011-2014 Ford F-150 V8 5.0L or 6.2L and the 2011-2016 F-150 V6 3.5L, and each truck takes one. For another model, open the "Vehicles it fits" section.
Will this Ford Explorer oxygen sensor work on a 2013-2019 Explorer V6 3.5L?
Yes. The 2013-2019 Ford Explorer V6 3.5L takes two of these sensors, and each listing is one sensor.
Is this Bosch premium oxygen sensor wide-band or narrow-band?
It is wide-band. Bosch 17321 has an M18 - 1.5 thread, a 22 mm hex and 6 terminals.
What warranty comes with this wide-band oxygen sensor?
Bosch gives a 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks.
Does this Bosch O2 sensor come with anti-seize on the threads?
Yes. Conductive anti-seize is already applied to the threads, and the sensor has direct-fit connectors and comes with its wiring harness.
