Oxygen Sensor for 2004-2005 Mazda 3 & More - Walker 350-34182

Walker Products 350-34182 oxygen sensor for the 2004-2005 Mazda 3 4-cylinder 2.0L or 2.3L and other vehicles reads the oxygen content of the exhaust gas on the downstream side. It is a narrow-band, direct-fit sensor made for its specific application and fitment position, and it gives the ECU the diagnostic feedback it expects.

• Monitors the exhaust oxygen level to track the air-fuel ratio and combustion efficiency
• Electrodes made of a gas-permeable platinum layer
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Measures oxygen levels so the air-fuel mixture can be fine-tuned, which supports fuel economy
• Monitors exhaust gases and helps reduce pollutants

Quick facts

• Part: Walker Products 350-34182 oxygen sensor
• Fits: 2004-2005 Mazda 3 4-cylinder 2.0L or 2.3L and other vehicles
• Position: Downstream
• Condition: New

A failing sensor can show up as rough running, higher fuel use or a lit malfunction indicator light. Before replacing it, look over the sensor, its wiring harness and the connector for physical damage with the engine off and cool, since the cause may lie elsewhere.

Fits

This sensor fits the 2004-2005 Mazda 3 4-cylinder 2.0L or 2.3L and the 2006-2007 Mazda 5 4-cylinder 2.3L, and each takes one. This listing is a single downstream sensor.

Specifications