
PIAA 15223 H3 Xtreme White Plus
$67.15
Buy on Amazon →
Used for: Fog Light Bulb Front
Used for: Fog Light Bulb Front
Used for: Headlight Bulb Low Beam(with halogen headlights)
Used for: Headlight Bulb Low Beam(with HID headlights)
Used for: Back Up Reverse Light Bulb, Turn Signal Light Bulb Rear
Used for: Brake Light Bulb, Side Marker Light Bulb Rear, Tail Light Bulb
Used for: Center High Mount Stop Light Bulb
Used for: License Plate Light Bulb, Stepwell Light Bulb
Used for: Parking Light Bulb, Side Marker Light Bulb Front, Turn Signal Light Bulb Front Inner
Used for: Turn Signal Light Bulb Front Outer
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.
The low beam bulb is H1 on 1999 Audi A6 models with halogen headlights.
The low beam bulb is D2S on 1999 Audi A6 models equipped with HID headlights.
The front parking light bulb is 2357A.
The front side marker light bulb is 2357A.
The front inner turn signal bulb is 2357A, and the front outer turn signal bulb is 2827.
The rear turn signal bulb is 7506.
The back up reverse light bulb is 7506.
Both the brake light and tail light use 7528 bulbs on this model.
The rear side marker light bulb is 7528.
The center high mount stop light bulb is 2723.
The license plate light bulb is 6418.
The stepwell light bulb is 6418.
The front fog light bulb may be H3C or H3, depending on the vehicle setup.
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.