Left Oxygen Sensor for 2018-2020 Ford F-150 & More - Bosch 18221

Q: Is this an oxygen sensor for the 2017-2020 Ford Fusion 4-cylinder 2.5L?

Yes. Bosch 18221 fits the 2017-2020 Ford Fusion 4-cylinder 2.5L, and the fitment calls for one sensor in this upstream left position.

Q: Does the Bosch 18221 oxygen sensor come with a wiring harness?

Yes. Bosch 18221 includes its wiring harness, and this listing is one sensor.

Q: What thread size does this Bosch premium oxygen sensor have?

This oxygen sensor has an M18 - 1.5 thread and a 22 mm hex. It has 5 terminals.

Q: How fast does this wideband oxygen sensor warm up?

It reaches operating temperature in under 7 seconds, which gets a signal to the ECU quickly for closed-loop control.

Q: Do I need to put anti-seize on this sensor's threads?

No. The threads come with conductive anti-seize already applied, and the connectors are direct-fit.

$163.99

Part number: 18221

UPC: 731413618017

Condition: New

Weight: 0.30 LBS

Item Package Quantity: 1

$163.99

Current Stock: 12

Quantity:

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Bosch Oxygen Sensor P/N:18221

$163.99

Description

Bosch 18221 left oxygen sensor for the 2018-2020 Ford F-150 V6 3.3L or V8 5.0L and other vehicles reads the exhaust and reports the air-fuel ratio to the ECU. The ECU uses that reading to control the air-fuel mixture, and this Bosch O2 sensor is a wideband type.

Wideband A/F measurement across the full lambda range
Reaches operating temperature in <7 seconds, so the ECU gets a signal quickly for closed-loop control
Metal housing with an integrated heater element and TSP coating to resist vibration, corrosion and contamination
Withstands exhaust streams up to 1,880°F

Quick facts

Part: Bosch 18221 oxygen sensor
Fits: 2018-2020 Ford F-150 V6 3.3L or V8 5.0L and other vehicles
Position: Upstream, upstream left
Material: Metal housing
Condition: New

A check engine light, poor fuel economy or a rough idle can mean a worn oxygen sensor. A vacuum leak, an exhaust leak, damaged wiring or a misfire can be behind the same signs, so find the cause before buying a sensor. If this sensor is the cause, this one replaces it.

Fits

As an oxygen sensor for the 2018-2020 Ford F-150 V6 3.3L or V8 5.0L, it also fits the 2017-2020 Ford Fusion 4-cylinder 2.5L and the 2019-2023 Ford Transit Connect 4-cylinder 2.0L.

Specifications

Fit and size

Position: upstream, upstream left
Quantity per vehicle: 1
Thread size: M18 - 1.5
Hex size: 22 mm
Overall length: 26.0 in
Length (sealing surface to end of connector): 24.8 in
Terminal quantity: 5

Build and materials

Sensor type: wide-band
Housing material: metal
Mounting type: threaded
Wiring harness: included
Condition: new
Warranty: Bosch 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks