Best Headlight LED Upgrade for Audi A4 B8 B8.5 - also A5 - YouTube
Amazon.com: AKKON - For 2009-2011 Audi A4 HID Xenon OE Projector LED Headlights Replacement - Driver Left Side : Automotive
Bi-Xenon Headlight Retrofit Upgrade from Halogen to Bi-Xenon Headlights For Audi A4 8K - autofidelity
Source Upgrade to 2020-2021 LED headlight headlamp assembly for Audi A4 B8 PA B8PA B8.5 2012-2016 head lamp head light plug and play on m.alibaba.com
Amazon.com: GOWE Car Styling for Audi A4 B8 Headlights 2009-2012 A4L LED Headlight LED DRL Bi Xenon Lens High Low Beam Parking Color Temperature:4300k;Wattage:35w : Automotive
RGB DRL Full Upgrade Kit – B8 Drivers
Halogen to Xenon Conversion for B7 Audi A4s (2005.5-2008) – Nick's Car Blog
Audi S4 (B8.5) - Black — Evil Headlights | Custom Retrofitting Service in Southern California
09-12 AUDI A4 B8 RS4 STYLE LED STRIP DRL STYLE PROJECTOR BLACK HEADLIGHTS