Details

• Brand:

  

  

• SKU:

  DY-1439

• Positions: Left Rear, Left, Rear Left Rear
• Other Names:

  Motorcraft™ Rear Oxygen Sensor, Sensor Exhaust Gas Oxygen

• Description:

  This genuine Motorcraft oxygen sensor is the rear, downstream post-catalyst unit for the 2018-2023 Ford Mustang GT with the 5.0L Coyote V8 and automatic transmission. Positioned after the catalytic converter, it monitors how well the converter is cleaning the exhaust and feeds the powertrain control module the data it needs to verify catalyst efficiency and complete emissions readiness monitors. Motorcraft catalogs it as a rear/left Oxygen Sensor. A worn or contaminated downstream sensor commonly illuminates the check engine light with catalyst-efficiency or oxygen-sensor codes, causes failed emissions or readiness testing, and can contribute to reduced fuel economy or hesitation as the module loses accurate exhaust feedback. Heat cycling, age, and contamination degrade these sensors over time. Note that the automatic-transmission Mustang uses this specific calibration; the manual-transmission car uses a different downstream sensor, so confirm the transmission before ordering. Fit the correct Motorcraft replacement, apply anti-seize to the threads only, torque to specification, and route the harness clear of the exhaust. The exact Motorcraft sensor ensures correct connector keying, wire count, and calibrated response for reliable service.

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