Rear Oxygen Sensor for 2009-2010 Chevrolet Optra & More - Walker 350-34026

Walker Products 350-34026 rear oxygen sensor for the 2009-2010 Chevrolet Optra 4-cylinder 2.0L and other vehicles measures the oxygen in the exhaust gas. This Walker Products oxygen sensor is a 4-wire, direct-fit narrow-band unit.

• Built for its specific application and fitment position, with the diagnostic feedback the ECU requires
• Monitors exhaust gases to help reduce pollutants
• Measures oxygen levels to fine-tune the air-fuel mixture and help fuel economy
• Electrodes with a gas-permeable platinum layer
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases

Quick facts

• Part: Walker Products 350-34026 oxygen sensor
• Fits: 2009-2010 Chevrolet Optra 4-cylinder 2.0L and other vehicles
• Position: Upstream, downstream, upstream rear
• Condition: New

Rough running, higher fuel consumption or a lit malfunction indicator light can mean the sensor is worn, though a damaged wiring harness or connector can be behind them too, so look both over for physical damage first.

Fits

The 2009-2010 Chevrolet Optra 4-cylinder 2.0L, the 2003-2008 Mazda 6 V6 3.0L and the 2004-2006 Chevrolet Epica 6-cylinder 2.5L all take this sensor, and so do other models. This listing is one sensor: the 2004-2006 Chevrolet Epica 6-cylinder 2.5L takes two, while the other two take one.

Specifications

Interchange: CTK-OSMA4007