Enhance the look of your Audi with the CAP Carbon Fiber Diffuser. Made with high quality carbon fiber, this diffuser will enhance the sporty look of your Audi will still remaining elegant.
2017 - 2019 Audi A4 S-Line, Non S-Line
2018 - 2019 Audi S4
Brake Light Wiring:
Red is the live wire.
Black is the ground wire.
Yellow is the brake light wire.
Professional install recommended. Removal of rear bumper is required to get the best fitment.
Note: Brake light has been updated to a fresher design.