Air Duct, Brake, Right

This Genuine BMW Right Brake Air Duct (Part Number: 51747396940) is compatible with BMW 3 Series F30 LCI and F31 LCI models.

Positioned on the right-hand side when sitting in the car, this air duct channels airflow directly to the brake components, helping dissipate heat and maintain consistent braking performance. By cooling the brakes more effectively, it prevents brake fade during extended drives and reduces wear caused by heat stress.

As a genuine BMW part, it ensures perfect fitment, long-term reliability, and original factory performance. Designed to replace the existing duct with no modifications required, it restores the intended airflow for optimal braking function.

Please note: This part is not compatible with M Sport models.

Whether you’re replacing a damaged duct or upgrading your brake cooling system, this air duct ensures balanced airflow and dependable performance for your BMW’s front braking system.

Part 51747396940 is identified as number 03 in the diagram.

For vehicles:

• with National version japan L807A=No
• with M Aerodynamics package S715A=No