Details

• Brand:

  

  

• SKU:

  BE5Z-9G444-B

• Positions: Rear Right Lower, Rear Right Front, Rear Right Rear, Right Lower, Right Front, Right Rear, Rear Left Lower, Rear Left Front, Rear Left Rear
• Other Names:

  Lower Oxygen Sensor, Rear Oxygen Sensor, Sensor Exhaust Gas Oxygen, dy1173

• Description:

  This is the genuine Ford heated exhaust gas oxygen sensor, cataloged as Sensor Exhaust Gas Oxygen and identified in Ford records as the rear, passenger-side downstream unit that mounts after the catalytic converter to monitor catalyst efficiency. It fits 2011 through 2012 Ford Escape and 2011 Mercury Mariner with the 3.0L V6, 2013 through 2015 Ford Explorer, Flex, and Taurus with the 3.5L and 3.7L V6, 2013 through 2015 Lincoln MKS and MKT, and 2013 through 2019 Lincoln MKZ with the 3.7L V6. As a downstream catalyst monitor, this sensor compares oxygen content before and after the converter, and a failing unit typically triggers a P0420 or P0430 catalyst-efficiency code, a check engine light, sluggish throttle response, or a failed emissions test. Symptoms buyers describe include a lit malfunction indicator lamp, slightly reduced fuel economy, and rough idle after the original sensor has aged, become contaminated, or suffered heater-circuit failure. Ford supplies this sensor with the correct connector and thread pitch so it seats into the factory bung without adapters. During installation apply anti-seize sparingly to the threads only if not pre-coated, route the harness away from the exhaust to prevent melting, and torque to the Ford specification. Being a genuine Ford part, its signal response and heater resistance match the powertrain calibration, which generic sensors often fail to replicate and which can cause lingering trouble codes.

WARNING: California Proposition 65

×

California Proposition 65

WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov