The genuine BMW brake air duct – left (51747459749) is compatible with BMW 1 Series F40 (from 2019) without M Aerodynamics package (option S715A = No). It forms part of the front bumper brake cooling system.
Installed within the front bumper assembly, this duct channels airflow directly towards the braking system to assist with temperature control and improve braking performance under load. Proper airflow management is essential for maintaining consistent brake efficiency and reducing heat build-up.
This is a genuine BMW part and the correct replacement component for vehicles not equipped with the M Aerodynamics package. Fitment may vary depending on build date and vehicle specification, therefore VIN or UK registration confirmation is recommended before purchase.
Please send us the VİN/Chassis number or vehicle registration before ordering.
Part 51747459749 is identified as number 07 in the diagram.
For vehicles:
- with M Aerodynamics package S715A=No
