Oxygen Sensor for 2003-2007 Ford Focus - Walker 350-34576

Walker Products 350-34576 oxygen sensor for the 2003-2007 Ford Focus 4-cylinder 2.3L and the 2005-2007 Focus 4-cylinder 2.0L measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. Each Walker part number is made for its specific application and fitment position, and it sends the feedback the ECU expects.

• Narrow-band design with 4 wires
• Electrodes made of a gas-permeable platinum layer
• Coating protects the electrode surfaces from combustion residue and particulates in the exhaust gases
• Monitors the air-fuel ratio in the exhaust to track combustion efficiency
• Oxygen readings help fine-tune the air-fuel mixture, which supports normal fuel economy and lower pollutants

Quick facts

• Part: Walker Products 350-34576 oxygen sensor
• Fits: the 2003-2007 Ford Focus 4-cylinder 2.3L and the 2005-2007 Focus 4-cylinder 2.0L
• Position: Upstream
• Condition: New

A failing oxygen sensor can show up as rough running, higher fuel consumption or a lit malfunction indicator light. Before you replace this sensor, rule out physical damage to its wiring harness and connector, because damage there can also shorten a sensor's life.

Fits

Direct-fit and upstream, this listing is one oxygen sensor. The 2003-2007 Ford Focus 4-cylinder 2.3L takes one, and so does the 2005-2007 Focus 4-cylinder 2.0L.

Specifications

Interchange: CTK-OSFD4012