Audi A4 1999 Bulb Size
Bulb size chart
This 1999 Audi A4 bulb size guide helps you verify the correct bulbs by lighting position before you buy replacements. Whether you are changing a headlight, a license plate lamp, or an interior bulb, matching the bulb to the exact location is the easiest way to avoid ordering the wrong part.
The 1999 Audi A4 used several different bulb types depending on the lamp position, and some fitments can vary by market, trim, and body style. Use this page as a quick reference for common exterior and interior lighting points on the car, including low beam headlights, tail lamps, turn signals, and courtesy lights.
For the best fitment results, compare the bulb listed for your specific position with the bulb already installed in your car, especially if your A4 has been modified or if the lighting package differs from the standard setup. Halogen and LED replacements are not always direct swaps, and aftermarket conversions may need extra hardware, resistors, or housings to work correctly. Before ordering, check the existing bulb base and part number whenever possible so you can confirm the match and avoid surprises during installation.
FAQ
What bulb does the 1999 Audi A4 use for the low beam headlight?
The low beam headlight bulb listed for the 1999 Audi A4 is D2S.
Which bulb fits the front outer turn signal on a 1999 Audi A4?
The front outer turn signal bulb is 2827.
What is the bulb size for the front inner turn signal?
The front inner turn signal bulb is 2357A.
What bulb is used for the rear turn signal on this Audi A4?
The rear turn signal bulb is 7506.
What bulb fits the brake light on a 1999 Audi A4?
The brake light bulb listed for this model is 7528.
Is the tail light bulb the same as the brake light bulb?
Yes, the tail light bulb is also listed as 7528 on the 1999 Audi A4.
What bulb is used for the back up reverse light?
The back up reverse light bulb is 7506.
Which bulb fits the parking light?
The parking light bulb is 2357A.
What bulb is used for the front side marker light?
The front side marker light bulb is 2357A.
What bulb fits the rear side marker light?
The rear side marker light bulb is 2825, 98.
Which bulb is used for the center high mount stop light?
The center high mount stop light bulb is 2825, 98.
What bulb fits the license plate light on a 1999 Audi A4?
The license plate light bulb is 6418.
What bulb is used for the dome light?
The dome light bulb is 6411, 6428.
Can trim or market differences change the bulb size on this car?
Yes. Trim level, lighting package, body style, and market can affect bulb fitment, so it is smart to confirm the bulb in your specific vehicle before buying.