ECS - Carbon Fiber Rear Diffuser for Audi B8.5 A4/S4 | eBay
For Audi A4 B8 Base Sedan 2009-12 Carbon Fiber Rear Bumper Lip Diffuser Spoiler | eBay
Amazon.com: JC SPORTLINE Carbon Fiber Rear Diffuser for Audi A4 B8 Standard Sedan 2009-2012 Rear Bumper Diffuser Lip Spoiler Factory Outlet (Style A) : Automotive
Karbel Style Carbon Fiber Rear Diffuser - Audi B8.5 S4 & A4 Sedan
Carbon Fiber Rear Diffuser for 2010-12 Audi S4 & A4 S-Line [B8] By Deval (
Diffuser Audi A4 B8 - SC Styling
ECS - 039684LA01-01 - Audi B8 A4 Pre Facelift Non S-Line Rear Diffuser - Single Outlet - Gloss Black