Details

• Brand:

  

  

• SKU:

  BL3Z-6C646-B

• Positions: Upper, Right Upper
• Other Names:

  Air Inlet Duct, Upper Hose, Duct Air

• Description:

  This genuine Ford air duct is the upper intercooler pipe for the 3.5L EcoBoost twin-turbo engine, routing pressurized charge air between the turbochargers, the intercooler, and the intake. Ford catalogs it under base 6C646 as an air inlet duct and inter-cooler pipe. It carries boosted air that has been cooled by the intercooler toward the throttle body, and it must hold a tight seal to preserve boost pressure. When the pipe cracks, the coupler splits, or a clamp loosens, the truck loses boost and power, may set a boost-pressure or lean code, hesitates under acceleration, and can whistle or hiss under load. This pipe fits 2011-2017 Ford F-150, Expedition, and Lincoln Navigator with the 3.5L EcoBoost engine. It is a direct replacement that reuses the original clamps and couplers unless they are damaged; inspect the O-rings and connection points, seat the pipe fully, and secure every clamp so the charge-air path is leak-free and full boost is restored.

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