Buy Mazda CX-9 Oxygen Sensor (Rear, Lower). 2010. 2011-15. CX-9; At Catalytic Convert. CX-9; Lower. EMISSION, Right, Left - OEM Mazda Part # CY0318861B9U (CY0-318-861B-9U, CY03-18-861B, CY0318861B)

Oxygen snsr. Sensor, Oxygen (O2).
Oxygen Sensor.

Oxygen Sensor

Fits CX-9 (2007 - 2011)

2010. 2011-15. CX-9; At Catalytic Convert. CX-9; Lower.
Oxygen Sensor - Repair or Replace
A failed Oxygen Sensor will often have no noticeable symptoms beyond a check engine light, but it does cause your Mazda CX-9 to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and Mazda genuine parts.