Audi A6 1999 Bulb Size
Bulb size chart
This page lists the bulb sizes for the 1999 Audi A6 by lighting position, so you can quickly verify the correct replacement before you buy. Because Audi used different lighting setups across trims, markets, and body styles, checking the exact location on the chart is the safest way to match the right bulb.
For the 1999 Audi A6, the chart covers exterior and interior bulbs such as headlights, parking lights, turn signals, brake lights, reverse lights, license plate lights, and stepwell lights. Use it as a fitment guide when replacing a single failed bulb or when planning a full lighting refresh.
Fitment can vary on the 1999 Audi A6 depending on trim, lighting package, and whether the car has halogen or HID headlights. That matters most for the low beam, since halogen cars use H1 bulbs while HID-equipped cars use D2S. If you are considering LED upgrades or other aftermarket conversions, make sure the bulb type, base style, and housing compatibility all match before ordering. The best practice is to compare the installed bulb with the chart and, if possible, remove the old bulb first so you can confirm the exact fit before purchase.
FAQ
What is the low beam headlight bulb for a 1999 Audi A6 with halogen headlights?
The low beam bulb is H1 on 1999 Audi A6 models with halogen headlights.
What is the low beam headlight bulb for a 1999 Audi A6 with HID headlights?
The low beam bulb is D2S on 1999 Audi A6 models equipped with HID headlights.
What bulb does the front parking light use on the 1999 Audi A6?
The front parking light bulb is 2357A.
What bulb is used for the front side marker light?
The front side marker light bulb is 2357A.
What are the front turn signal bulb sizes on this car?
The front inner turn signal bulb is 2357A, and the front outer turn signal bulb is 2827.
What bulb fits the rear turn signal on a 1999 Audi A6?
The rear turn signal bulb is 7506.
What bulb is used for the reverse light?
The back up reverse light bulb is 7506.
What bulb fits the brake light and tail light?
Both the brake light and tail light use 7528 bulbs on this model.
What bulb is used for the rear side marker light?
The rear side marker light bulb is 7528.
What is the center high mount stop light bulb size?
The center high mount stop light bulb is 2723.
What bulb is used for the license plate light?
The license plate light bulb is 6418.
What bulb fits the stepwell light?
The stepwell light bulb is 6418.
What fog light bulb does the 1999 Audi A6 use?
The front fog light bulb may be H3C or H3, depending on the vehicle setup.
Why should I check the installed bulb before ordering replacements?
Because trim level, market, and body style can change the fitment on a 1999 Audi A6, checking the installed bulb helps confirm the exact size and avoids ordering the wrong part.