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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.

Fits B8.5 Audi S4 & A4 S-Line.

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

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