For the 2012 Volkswagen GTI, the low-beam headlight fitment is D1S. High-beam listings include H15 and D1S, so confirm the installed headlight assembly before ordering. The daytime running light depends on the headlight type: H15 with halogen headlights or LED with HID headlights.
- Vehicles with LED tail lights use 921 reverse bulbs, LED brake lights, and LED tail lights.
- Vehicles without LED tail lights use 7440 for reverse lights, 921 for brake lights, and 921 for tail lights.
- The rear turn signal uses 7440A.
- License plate, parking, and map light listings include 2825 and 98.
- The front side marker and step light use 2821.
Check whether your GTI has halogen or HID headlights and whether it is equipped with LED tail lights, as these configurations change several bulb types.