Carbon Fiber Rear Diffuser for Audi S4 B8 Sedan Pre-facelift 2009-2012, With or Without Brake Light
Available in stock (20)
Carbon Fiber Rear Diffuser for Audi S4 B8 Sedan Pre-facelift (2009-2012)
A carbon fiber diffuser that replaces the factory plastic rear diffuser on the pre-facelift B8 S4 sedan, giving the lower rear bumper a glossy carbon finish. It is made from premium 3x3 weave carbon fiber with a UV-resistant high-gloss coating, and is available with or without a brake light. It is secured with the self-tapping screws supplied.
Options
- Without brake light
- With brake light: diffuser with an integrated brake light
Fitment
- Audi S4 B8 2009-2012, pre-facelift
- Body style: Sedan, 4-door
- Position: Rear bumper, lower diffuser
- Not for: A4 B8 base or S line models, the facelift B8.5 S4 (2013-2016), or the S4 Avant
S4 rear bumper only, not A4 S line. Confirm your model and year by VIN, or send photos of your rear bumper, before ordering.
Specifications
- Material: Premium 3x3 weave carbon fiber
- Finish: UV-resistant high-gloss clear coat
- Style: Replacement for the factory plastic diffuser
- Mounting: Self-tapping screws included
Installation
- Lift the car safely and remove the factory plastic diffuser.
- Test-fit the carbon diffuser and check alignment with the bumper and exhaust openings.
- Secure it with the supplied self-tapping screws.
Professional installation is recommended, especially for the brake light version.
FAQ
Does it fit an A4 with S line bumper? No. S4 only.
Does it fit a 2013-2016 S4? No. Pre-facelift 2009-2012 only.
Is it a stick-on overlay? No. It replaces the factory plastic diffuser.
What is the difference between the options? One version includes a brake light, the other does not.
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Stephanie L.
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