For the 2008 Volkswagen Passat, the supplied fitment data lists a D1S bulb for the low-beam headlight. No high-beam bulb fitment is provided, so confirm the original bulb before ordering or replacing that position.
The front turn signal uses bulb 64136. Daytime running lights use 7506, while the parking lights and front side markers use 2827. The reverse lights also use 7506.
Several rear lighting functions are listed as integrated LED assemblies rather than replaceable bulbs: the brake lights, center stop light, tail lights, and rear turn signals. For the license plate lights, compare the original bulb carefully: the supplied options are 2825 or 98 under Option 1, and 6418 under Option 2.
Interior applications include 6418 for the dome and vanity lights, 2821 for the glove-box and step lights, and 6411 or 6428 for the trunk light. Map and general interior lighting may use 2825 or 98. Check the existing bulb and housing before purchase.