Audi A6 2009 Bulb Size
Bulb size chart
This 2009 Audi A6 bulb size guide helps you verify the correct bulbs by lighting position, so you can match the right part before you buy. Because Audi used different lighting setups across trims and markets, checking the exact location on the car is the best way to avoid ordering the wrong bulb.
Use this page as a quick reference for exterior and interior lighting on the 2009 Audi A6. It covers common fitments such as headlight, tail light, brake light, turn signal, reverse light, license plate light, dome light, map light, and cargo-area bulbs, along with several position-specific courtesy and marker lamps.
Fitment can vary by trim, lighting package, body style, and market, so compare the bulb listed for your exact position with the bulb already installed in the car. This is especially important on the 2009 Audi A6 because some models use HID or halogen headlight setups, and fog lights or daytime running lights may differ depending on configuration. If you are converting to aftermarket LED bulbs, make sure the replacement matches the socket type, size, and any vehicle-specific requirements. Before ordering, remove the old bulb and confirm the marking on the base whenever possible, since that is the most reliable way to verify fitment.
FAQ
What bulb size does the 2009 Audi A6 use for the low beam and high beam headlights?
The 2009 Audi A6 uses D3S for the high beam and low beam headlight bulb listing on HID-equipped vehicles. If your car has halogen headlights, the high beam bulb is H15.
Which bulb is used for the daytime running lights on a 2009 Audi A6?
The daytime running light bulb is H15 on halogen headlight models. On HID headlight models, the daytime running light bulb is 7506.
What is the front turn signal bulb size on this Audi A6?
The front turn signal light bulb is 3457A.
What bulb does the rear turn signal use on the 2009 Audi A6?
The rear turn signal light bulb is 7507.
What size is the reverse light bulb?
The back up reverse light bulb is 921.
What bulb fits the brake light on this model year?
The brake light bulb is 1156A.
What bulb size is used for the front side marker light?
The front side marker light bulb is 2827.
What bulb is listed for the license plate lights?
The license plate light bulb is 6418.
Which bulb fits the dome light and map lights?
Both the dome light bulb and the map light bulb are listed as 64111.
What bulb size is used for the glove box, trunk, and stepwell lights?
Those interior utility lights are listed as 2825 or 98 for the glove box light, trunk or cargo area light, and stepwell light.
Are the courtesy lights all the same on the 2009 Audi A6?
Not always. The page lists multiple courtesy light options depending on position and original equipment: 2821 for one courtesy light application, 2825 or 98 for another, and 6418 for a third.
What bulb is used for the fog lights?
The front fog light bulb is listed as H11 LED or H16 LED, depending on the specific setup.
Does the 2009 Audi A6 use different parking light bulbs?
Yes. With halogen headlights, the parking light bulb is listed as 2825 or 98. With HID headlights, the parking light bulb is 3457A.
Should I check the bulb already installed before buying replacements?
Yes. Checking the installed bulb is the safest way to confirm fitment, especially on a 2009 Audi A6 where trim, package, and market differences can change the bulb used in a given position.