Used for: Headlight Bulb High Beam
Used for: Headlight Bulb High Beam and Low Beam
Used for: Back Up Reverse Light Bulb
Used for: Brake Light Bulb, Tail Light Bulb
Used for: Daytime Running Light Bulb
Used for: License Plate Light Bulb, Vanity Mirror Light Bulb
Used for: Parking Light Bulb, Turn Signal Light Bulb Front Inner
Used for: Side Marker Light Bulb Front, Turn Signal Light Bulb Front Outer
Used for: Stepwell Light Bulb, Glove Box Light Bulb, Interior Door Light Bulb, Trunk or Cargo Area Light
Used for: Stepwell Light Bulb, Glove Box Light Bulb, Interior Door Light Bulb, Trunk or Cargo Area Light
Used for: Turn Signal Light Bulb Rear
Used for: Courtesy Light Bulb
Used for: Dome Light Bulb, Map Light Bulb
Used for: Trunk or Cargo Area Light(Compare to original - Option 2)
Used for: Trunk or Cargo Area Light(Compare to original - Option 3)
Used for: Trunk or Cargo Area Light(Compare to original - Option 3)
This 2008 Audi A6 bulb size guide helps you verify the correct replacement bulb by lighting position, so you can match the right part before you buy. Whether you are changing a headlight, interior lamp, or rear signal bulb, checking the location on the car is the easiest way to avoid ordering the wrong size.
The 2008 Audi A6 used different bulbs depending on trim, market, and body style, so one A6 may not match another exactly. Use this page as a position-by-position reference for exterior and interior lighting, including common items like the license plate lights, map lights, brake lights, and reverse lights.
For the best fitment, compare your vehicle’s trim and lighting package against the bulb chart, especially if your A6 has halogen headlights, xenon/D2S low beams, or an aftermarket LED conversion. Some positions can vary by equipment level, and a bulb listed for one package may not be correct for another. Before placing an order, it is smart to remove the installed bulb and check the base style and markings, since previous repairs or non-OEM parts can change what is actually in the socket.
The chart shows H1 for the high beam on some setups, and D2S for the headlight bulb when the high beam and low beam are listed together. That difference usually depends on trim and lighting package.
The rear turn signal bulb is listed as 7507.
The back up reverse light bulb is listed as 921.
Both the brake light bulb and tail light bulb are listed as 7506R on this page.
Both the parking light bulb and the front inner turn signal bulb are listed as 3457A.
The front outer turn signal bulb and the front side marker light bulb are both listed as 2827.
The daytime running light bulb is listed as 7506.
Both the license plate light bulb and the vanity mirror light bulb are listed as 6418.
The dome light bulb and map light bulb are both listed as 64111.
Several interior positions use 2825 or 98, including the glove box light, trunk or cargo area light, interior door light, and stepwell light. One trunk/cargo listing also shows 194 or 7441, and another optional trunk/cargo listing shows 6486X.
The center high mount stop light is listed as LED, so it may not use a replaceable traditional bulb in the same way as other positions.
Because trim, market, body style, and previous repairs can change what is installed. Checking the bulb in the car helps confirm the base and size before you buy a replacement.
