OKAY MOTOR Upstream Air Fuel Ratio Oxygen Sensor for 2006-2008 Mazda 6 2.3L Upstream Air Fuel Ratio Sensor for 2006-2008 Mazda 6 2.3L Exc. Calif. Part #: 250-25069, 234-5011, 15374, 75-4013, 24360 New Aftermarket Replacement Unit. 180-days Manufacturer Type Warranty Limited. Applications: 2006-2008 Mazda 6 2.3L