For the 2011 Cadillac CTS-V, the headlight fitment depends on the installed headlamp configuration. The low beam is listed as either D1S or H11, while the high beam is listed as either D1S or H9. Confirm whether the vehicle has HID or halogen-style headlights before ordering, since these options are not interchangeable.
The fog lights use an H11 LED fitment. Front turn signal bulbs also vary by headlight type:
- 2504 LED with halogen headlights
- 12272NA with HID headlights
Other listed exterior bulbs include 5201 for the daytime running lights, 2825 for the parking and license plate lights, and 194NA for the front side markers. Interior applications include 2825 for the dome light, 906 for the glove box and interior lighting, PC175 for the map lights, 211-2 for the trunk, 6612F for the vanity light, and 2886X for the step lights.