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2013 Audi A4 Quattro Xenon HID Headlight Replacement Bulb – hidreplacement
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Original Xenon Bulb D3S for AUDI - A4 (8K2, B8)
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Amazon.com: AUXLIGHT H7 H7LL LED High/Low Beam Headlight Bulbs, Replacement for 1996-1997 Audi A4 as Hi/Lo Beam, 1998-2002 as Hi Beam, 12000 Lumens Plug-N-Play Conversion Kit, 6000K Cool White (Pack of 2) :
2x D1S Bi-Xenon Replacement Bulbs for AUDI A4 B6 HID 6.000K White Ice 35W
How to Change the Headlights and Bulbs 2005-08 Audi A4 « Car Maintenance Tips :: WonderHowTo
2 Replacement BI-XENON D5S Bulbs for AUDI A4 B9 Cool White Light 6000K 35W
2006 Audi A4 Quattro Avant Xenon HID Replacement Bulb | Low Beam – hidreplacement
Headlight Bulb Replacement: 2017 Audi A4 Quattro Premium Plus 2.0L 4 Cyl. Turbo