2017-2019 B9 Audi S4 - CAP Carbon Fiber Diffuser - V2

***ETA of Stock is June 4, 2024***

CAP Carbon Fiber Diffuser For Audi B9 S4

Enhance the look of your Audi with the B9 Audi S4 CAP Carbon Fiber Diffuser. Made with high quality carbon fiber, this diffuser will enhance the sporty look of your Audi while still remaining elegant. Comes with function LED brake light in the middle.

Please note, this carbon diffuser does not fit the B9 Audi A4 vehicle, S-Line or not, as the rear bumper is not the same as the B9 Audi S4. 

Wiring Instructions:

Brake Light Wiring:
Red is the live wire.
Black is the ground wire.
Yellow is the brake light wire.

Install Instructions Disclaimer:

Professional install of this carbon diffuser by someone who has aftermarket product experience is required. 
Rear bumper must be removed to install this carbon fiber diffuser properly.