Audi S4 2006 Bulb Size
Bulb size chart
This 2006 Audi S4 bulb size guide helps you verify the correct bulb by lighting position, so you can match the right part before you buy. Because the S4 was offered with different body styles and lighting packages, the exact bulb can vary from one location to another, and this page is organized to make those fitments easier to check.
Use the listings for the front, rear, interior, and exterior lamps to confirm the bulb type for your specific 2006 Audi S4. Whether you are replacing a headlight, brake light, license plate light, or cabin bulb, checking the bulb by position is the safest way to avoid ordering the wrong size.
Fitment can change with trim, market, and body style, so always compare your car against the chart before purchasing. Halogen and HID setups use different low-beam bulbs, and some lighting positions also differ between Avant and Cabriolet models. LED aftermarket conversions may fit physically but still need the correct base and may not work well with the factory housing or electronics. Before you order, remove the installed bulb and read the number on the base whenever possible, especially if your S4 has been modified or if you are replacing a bulb that was converted by a previous owner.
FAQ
What bulb size does the 2006 Audi S4 use for the low beam headlights?
It depends on body style and headlight package. The Avant with HID headlights uses D1S, the Cabriolet with HID headlights uses D2S, and the Avant with halogen headlights uses H7 for the low beam.
What is the high beam bulb for the 2006 Audi S4?
The Avant uses H7 for the high beam. The Cabriolet with halogen headlights uses H9 for the high beam.
Which bulb fits the front fog lights on a 2006 Audi S4?
The front fog light bulb listing shows H11 LED or H16 LED, so you should confirm which version your car uses before buying.
What bulb is used for the rear turn signal on this model?
The rear turn signal light bulb is 7507.
What bulb size is used for the front turn signals?
The front outer turn signal, front inner turn signal, and front side marker positions are listed as 3457A or 2827 depending on the exact lamp position.
What bulb does the daytime running light use on the 2006 Audi S4?
The daytime running light bulb is 7506.
What bulb fits the back-up reverse light?
The back-up reverse light bulb is 7506.
What are the brake light bulb options for the 2006 Audi S4?
Brake light fitment varies by body style. The Base listing shows 7506R, the Avant uses 7528, and the Cabriolet uses 7225.
What bulb is used for the tail lights?
Tail light fitment also varies by configuration. One option is 7528, and another listed option is 7225 for certain setups.
What bulb size is used for the license plate lights?
The license plate light bulb is 6418.
What bulb fits the vanity mirror lights?
The vanity mirror light bulb is 6418.
Which bulb is used for interior courtesy and cargo lights?
Several interior and cargo-related positions use 2825 or 98, including the glove box light, trunk or cargo area light, interior door light, stepwell light, and Avant courtesy light. Some other courtesy and cargo positions use 6418 depending on the trim.
What bulb does the dome light use?
The dome light bulb is 6411 or 6428.
What bulb fits the map light?
The map light bulb is 64111.
Should I check the bulb before ordering replacements for my 2006 Audi S4?
Yes. Because trim, package, and body style can change the bulb type, it is smart to compare the installed bulb number with the chart before you buy.