Details

• Brand:

  

  

• SKU:

  JL3Z-17F803-A

• Positions: Front Left, Left
• Other Names:

  Radiator Support Air Duct, Duct Air

• Description:

  This is a genuine Ford driver-side radiator support air duct for the 18-20 F-150. The duct is a molded plastic piece that routes incoming air from the front bumper opening to the radiator and cooling fan area, providing controlled airflow management that maintains adequate cooling capacity at idle and low-speed driving conditions where ram-air effects are minimal. The duct is part of the front-end aerodynamic and cooling management system, working in conjunction with the active grille shutters, the radiator core support, and the engine bay structure to produce the cooling and aerodynamic behavior calibrated for the truck. Failure modes include cracked plastic from impact damage, heat-induced warping in extreme operating conditions, broken or distorted mounting tabs that prevent proper alignment against the radiator support, and broken seals at the interface with adjacent components that allow uncontrolled airflow leakage and reduce cooling efficiency. Symptoms can include elevated coolant temperatures during heavy load or stop-and-go driving, particularly with the air conditioning compressor cycling, and reduced highway fuel economy from disrupted aerodynamic behavior. The genuine duct carries the correct mounting geometry, sealing interface, and airflow management features for the F-150 application. Replacement requires partial disassembly of the front bumper area for access, careful release of retention clips, removal of the old duct, and methodical reinstallation with attention to all sealing surfaces and mounting tabs to maintain controlled airflow behavior. This listing covers the individual duct only.

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