2002 Audi S4 bulb fitment starts with a D2S low-beam bulb. No high-beam bulb fitment is supplied for this model year, so verify the headlamp assembly before ordering a replacement. Fog-light options listed are H11 LED and H16 LED; confirm which socket and housing your vehicle uses.
- Front turn signals may use 3457A or 2827, while the front side marker uses 3457A.
- Rear turn-signal fitment varies by body style: the Avant uses 7506, while the Base configuration uses 7507.
- Reverse lights use 7506, and brake, tail, and rear side-marker lights use 7528.
- Daytime-running, parking, courtesy, and trunk lights may use 2825 or 98.
- The center stop light is LED. License-plate and glove-box lights use 6418; dome and engine lights may use 6411 or 6428.
- Map lighting is listed as 64111.
Because several interior and signal locations have multiple listed options, compare the installed bulb or socket with these references before purchasing.