For the 2002 Audi A4, the supplied fitment data lists a D1S bulb for the low-beam headlight. No high-beam bulb is listed, so verify the high-beam socket and headlamp assembly before ordering a replacement.
Fog-light fitment is shown with two options: H11 LED and H16 LED. These should be treated as configuration-dependent alternatives; check the existing fog-light bulb and housing to confirm which applies to your A4.
- Front turn signal: 3457A or 2827
- Front side marker: 3457A
- Reverse light: 7506
- Brake, tail, and rear side marker: 7528
- Rear turn signal: 7507
- License plate and trunk lights: 6418
- Center stop light: integrated LED
Interior and convenience-light options include 2825 or 98 for several locations, 6411 or 6428 for the dome and engine lights, 64111 for the map light, and 6418 for the vanity light. Compare the installed bulb before purchasing where multiple sizes are listed.