For the 1996 Audi A4, the supplied fitment data does not specify a low-beam or high-beam bulb. Confirm the headlamp assembly and existing bulb before ordering replacement headlight bulbs.
The front fog light uses an H1 bulb. Front turn signals, parking lights, and front side markers use 2357A. At the rear, the turn signal and reverse light use 7506, while the tail and brake lights use 7528.
The center stop light and rear side markers may use either 2825 or 98. The same two options also apply to the courtesy light. Interior fitments include 6411 or 6428 for the dome and engine lights, and 6418 for the glove box, map, and trunk lights. The license plate light also uses 6418.