Oxygen Sensor for 2003-2007 Ford Focus - Bosch 15645

Bosch 15645 oxygen sensor for the 2003-2007 Ford Focus 4-cylinder 2.3L and the 2005-2007 Focus 4-cylinder 2.0L measures oxygen in the exhaust and reports air-fuel-ratio readings to the ECU. This Bosch O2 sensor goes in the downstream position.

• Switching-type narrow-band design for precise air-fuel-ratio feedback to the ECU
• Built to withstand exhaust streams up to 1,880°F
• Metal housing, integrated heater element and TSP coating resist vibration, corrosion and contamination
• Reaches operating temperature in under 10 seconds for quick closed-loop control and cold-start response

Quick facts

• Part: Bosch 15645 oxygen sensor
• Fits: 2003-2007 Ford Focus 4-cylinder 2.3L and the 2005-2007 Focus 4-cylinder 2.0L
• Position: Downstream
• Material: Metal housing
• Condition: New

A lit check engine light, poor fuel economy or a rough idle can mean an oxygen sensor is wearing out. Those signs alone don't prove the sensor is the problem, since an exhaust leak near it can skew the readings too. This listing is one sensor, and each engine takes one downstream sensor.

Fits

This is a direct-fit replacement for the 2003-2007 Ford Focus 4-cylinder 2.3L and the 2005-2007 Focus 4-cylinder 2.0L.

Specifications

In the box

One oxygen sensor with its wiring harness. A mounting bracket is not included.

Installation notes

• Direct-fit connector for quick installation.
• Conductive anti-seize is pre-applied to the threads.