Air Duct with Active Air Flap Control – Top

The genuine BMW air duct with active air flap control – top (51745A23EB3) is compatible with BMW 1 Series F40 (from 2019) and selected BMW UKL platform models equipped with CO2 equipment (option S1CBA = Yes). It forms part of the upper front bumper air management system.

This component integrates the active air flap control mechanism, allowing regulated airflow through the upper air duct system. The controlled flap operation improves aerodynamic efficiency and optimises engine cooling performance depending on driving conditions. It is a genuine BMW part and the correct replacement for vehicles fitted with the active air flap system.

Part number 51745A23EB3 has been discontinued and replaced by a later BMW revision. As fitment depends on production date and equipment specification.

Please send us the VİN/Chassis number or vehicle registration before ordering.

Part 51745A23EB3 is identified as number 04 in the diagram.

Supersedes: 51749448484

For vehicles:

• with CO2 equipment S1CBA=Yes