Audi S6 2003 Bulb Size
Bulb size chart
This page covers the 2003 Audi S6 and helps you verify bulb sizes by lighting position, so you can match the correct replacement before you buy. Because Audi used different lamps in different areas of the car, the safest approach is to check each location separately instead of assuming one bulb fits every light.
Use the chart on this year page to confirm the bulb type for exterior, interior, and cargo-area lighting. The 2003 Audi S6 can have trim, market, and body-style differences, so the exact fitment may vary between sedan and Avant models or depending on the lighting package installed.
For best results, compare the bulb in the car with the listing on this page before ordering, especially if you are switching between halogen and LED replacements or using aftermarket conversion kits. Some positions on the 2003 Audi S6 use specific factory bulb types that should be matched carefully for beam pattern, brightness, and warning-light compatibility. Trim and package differences can also affect fitment, so the same year and model may not use identical bulbs in every market. If you are unsure, remove the installed bulb and check the base and markings first, then buy the exact replacement size rather than guessing.
FAQ
What is the low beam bulb size for a 2003 Audi S6?
The low beam headlight bulb listed for the 2003 Audi S6 is D2S.
What bulb does the high beam use on this model year?
The high beam headlight bulb is H1.
Which front fog light bulb fits the 2003 Audi S6?
The front fog light bulb is listed as H3C or H3.
What bulb size is used for the front outer turn signal?
The front outer turn signal light bulb is 2827.
What bulb is used for the front inner turn signal?
The front inner turn signal light bulb is 3457A.
What are the rear turn signal and reverse light bulb sizes?
Both the rear turn signal light bulb and the back up reverse light bulb are listed as 7506.
What bulb does the brake light use?
The brake light bulb is 7528.
What bulb fits the tail light and rear side marker?
The tail light bulb and rear side marker light bulb are both listed as 7528.
What is the center high mount stop light bulb size?
The center high mount stop light bulb is 2723.
Which bulb fits the license plate lights?
The license plate light bulb is 6418.
What bulb sizes are used for the dome, map, and courtesy lights?
The dome light bulb is 6411 or 6428, while the map light bulb and courtesy light bulb are listed as 64111.
What bulb is used for the glove box, vanity mirror, and stepwell lights?
Those interior positions use the 6418 bulb.
Does the 2003 Audi S6 use the same trunk bulb in every body style?
No. The trunk or cargo area light can vary by body style and option. One listing uses 194 or 7441, while the Avant cargo area light may use 6486X depending on the original setup.
Are daytime running lights and parking lights the same on this car?
No. The daytime running light bulb is listed as 2825 or 98, and the parking light bulb for Avant models is also listed as 2825 or 98.
Why should I check the installed bulb before ordering replacements?
Because trim, market, and lighting package differences can change fitment. Checking the installed bulb helps confirm the exact base and avoids ordering the wrong part.