Rear Oxygen Sensor for 2003-2008 Mazda 6 & More - Walker 350-34565

Walker Products 350-34565 rear oxygen sensor for the 2003-2005 Mazda 6 4-cylinder 2.3L, the 2006-2008 6 V6 3.0L and other vehicles measures the oxygen content of the exhaust gas to show combustion efficiency. Each part number is made for its specific application and fitting position, and it supplies the diagnostic feedback the ECU expects.

• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
• Electrodes made of a gas-permeable platinum layer
• Measures oxygen levels so the air-fuel mixture can be fine-tuned, which helps fuel economy
• Monitors exhaust gases to help reduce pollutants
• Four-wire narrow-band sensor

Quick facts

• Part: Walker Products 350-34565 oxygen sensor
• Fits: 2003-2005 Mazda 6 4-cylinder 2.3L, the 2006-2008 6 V6 3.0L and other vehicles
• Position: Downstream rear
• Condition: New

A failing sensor can show up as rough running, higher fuel consumption or a check engine light, and those signs have other possible sources. Before replacing it, look over the sensor, its wiring harness and the connector for physical damage with the engine off and cool.

Fits

It is a direct-fit oxygen sensor replacement for the 2003-2005 Mazda 6 4-cylinder 2.3L, the 2006-2008 6 V6 3.0L and the 2000-2002 Mazda 626 V6 2.5L. One sensor per vehicle is needed, and this listing is a single sensor.

Specifications

Interchange: CTK-OSMA4009