Shop OEM BMW Part # 72127239400 (72-12-7-239-400). Curtain Air Bag (Right). 4 Series; Right. 430i, 430i xDrive; Coupe; Right. 440i, 440i xDrive; Coupe; Right. AIR BAGS. M4; Right. Air Bag

Air. Head. Curtain. Bag. Inflator.
The Air Bag Inflator module mounted to The roof line area of a vehicle.

Curtain Air Bag

4 Series; Right. 430i, 430i xDrive; Coupe; Right. 440i, 440i xDrive; Coupe; Right. AIR BAGS. M4; Right.
Air Bag Inflator Module - Repair or Replace
A very specific set of circumstances may require the replacement of your air bag inflator. If these apply to you, it's best for you and your to have a factory trained technician replace your air bag inflator module.