Center Oxygen Sensor for 2003-2011 Ford Focus - Walker 250-24651

Walker Products 250-24651 center oxygen sensor for the 2003-2007 Ford Focus 4-cylinder 2.3L and the 2005-2011 Focus 4-cylinder 2.0L measures the oxygen content of the exhaust gas. The ECU uses that reading to monitor the air-fuel ratio and combustion efficiency.

• Helps fine-tune the air-fuel mixture, which supports fuel economy
• Electrodes made of a gas-permeable platinum layer
• Monitors exhaust gases and helps reduce pollutants
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Walker Products oxygen sensor with a four-wire, narrow-band design

Quick facts

• Part: Walker Products 250-24651 oxygen sensor
• Fits: the 2003-2007 Ford Focus 4-cylinder 2.3L and the 2005-2011 Focus 4-cylinder 2.0L
• Position: center, downstream
• Condition: New

A failing sensor can make the engine run poorly, raise fuel consumption and exhaust emissions, or turn on the malfunction indicator light. Before you replace the sensor, look over its wiring harness and connector for physical damage with the engine off, since damage there can shorten a sensor's life and cloud the diagnosis.

Fits

This direct-fit oxygen sensor is for the 2003-2007 Ford Focus 4-cylinder 2.3L and the 2005-2011 Focus 4-cylinder 2.0L. The listing is one sensor, and each of those engines takes one.

Specifications