Rear Oxygen Sensor for 2012-2013 Mazda 3 & More - Walker 350-34510

Walker Products 350-34510 rear oxygen sensor for the 2012-2013 Mazda 3 4-cylinder 2.0L and other vehicles measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. This Walker Products oxygen sensor gives the ECU the diagnostic feedback it requires.

• Monitors exhaust gases to help reduce pollutants
• Measures exhaust oxygen to help fine-tune the air-fuel mixture for fuel economy
• Sensing electrodes with a gas-permeable platinum layer
• Coating guards electrode surfaces against erosion and contamination from combustion residue and particulates

Quick facts

• Part: Walker Products 350-34510 oxygen sensor
• Fits: 2012-2013 Mazda 3 4-cylinder 2.0L and other vehicles
• Position: upstream, downstream, downstream rear
• Condition: New

A failing sensor can show up as rough running, higher fuel use, more exhaust emissions or a lit check engine light, though other parts can produce these signs too. With the engine off and cool, look over the sensor, wiring harness and connector for physical damage before you decide to replace it.

Fits

The 2012-2013 Mazda 3 Sport 4-cylinder 2.0L and the 2003-2005 Mazda 6 V6 3.0L take this sensor too, and the fitment calls for one on each car. This listing is a single sensor. Other Mazda models are covered as well, so open the "Vehicles it fits" section to check your exact model and engine.

Specifications