For the 2011 Audi TT, both the low-beam and high-beam headlights use D1S bulbs. The fog lights use H7 bulbs. The supplied fitment data does not identify a separate headlight-type variation, so verify the existing bulb and lamp assembly before ordering.
Other notable exterior fitments include two listed options for the front turn signals, 64136 or 7507. The parking lights and front side-marker lights likewise list 2827 or 64132. Rear lighting uses 7506 for the brake and tail lights, while the rear turn signal uses 921. The reverse lights also use 921.
- Daytime running light: 7506
- Center stop light: LED
- License plate and courtesy lights: 6418
- Glove box, map, and trunk lights: 2825
Where more than one bulb number is listed, confirm the installed bulb or socket style before purchasing.