For the 2001 Audi S8, low-beam fitment depends on the factory headlight system: models with halogen headlights use H1 bulbs, while models with HID headlights use D2S. No high-beam bulb fitment is provided in the available data, so verify the original headlamp assembly before ordering.
Other notable exterior lighting options include H3 or H3C fog-light bulbs, with front turn signals listed as 2357A or 2827. Rear turn signals and reverse lights use 7506, while brake lights use 7528. Tail-light fitment is listed as 5007 or 7528.
- Center stop, daytime running, parking, courtesy, and rear side-marker locations: 2825 or 98
- Front side markers: 2357A
- License plate and step lights: 6418
- Dome lights: 6411 or 6428
- Map and reading lights: 64111 and 6486X
Check the existing bulb and headlight configuration when more than one size is listed.