Buy 2009 Mazda CX-9 Oxygen Sensor (Rear). 2.5 LITER, converter. 626, MX-6; 6 Cyl; On Converter. EMISSION, Converter - OEM Mazda Part # KLS718861B (KLS7-18-861A, KLS7-18-861B, KLS718861A, USEKLS718861B)

Oxygen. Sensor. (O2).
Calif. Oxygen Sensor.

Oxygen Sensor

Fits 626

2.5 LITER, converter. 626, MX-6; 6 Cyl; On Converter.
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 2009 Mazda CX-9 to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and Mazda genuine parts.