Center Oxygen Sensor for 2004-2009 Mazda 3 & More - Walker 350-34246

Walker Products 350-34246 center oxygen sensor for the 2004-2009 Mazda 3 4-cylinder 2.0L, the 2006-2009 3 4-cylinder 2.3L and other vehicles measures how efficiently the engine burns fuel by reading the oxygen in the exhaust gas. Each Walker Products oxygen sensor is made for its specific application and fitment position, and it gives the ECU the diagnostic feedback it expects.

• Narrow-band, four-wire design
• Electrodes made of a gas-permeable platinum layer
• Monitors exhaust gases and reduces pollutants for a cleaner environment
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and exhaust particulates
• Oxygen readings help fine-tune the air-fuel mixture for fuel economy

Quick facts

• Part: Walker Products 350-34246 oxygen sensor
• Fits: 2004-2009 Mazda 3 4-cylinder 2.0L, the 2006-2009 3 4-cylinder 2.3L and other vehicles
• Position: Center, downstream
• Condition: New

Poor running, higher fuel consumption or a lit malfunction indicator light can be signs of a failing oxygen sensor. Those signs alone do not prove the sensor is the problem, because a damaged wiring harness or connector is another possible cause.

Fits

This is a direct-fit oxygen sensor replacement for the 2004-2009 Mazda 3 4-cylinder 2.0L and the 2006-2009 Mazda 3 4-cylinder 2.3L. It also fits the 2011-2017 Mazda 2 4-cylinder 1.5L and the 2006-2008 Mazda 6 4-cylinder 2.3L. This listing is one sensor, and each of these engines takes one in the center downstream position.

Specifications

Interchange: CTK-OSMA4004

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