2005 Chevrolet Cobalt bulb fitment uses a 9007 bulb for both the low-beam and high-beam headlights. The supplied fitment data does not identify a separate headlight bulb by housing or headlight type, so verify the existing bulb before ordering.
For the fog lights, the listed options are H11 LED and H16 LED. Other useful exterior applications include 3457A bulbs for the front turn signals and parking lights, 3157R for the brake and tail lights, and 3157 for the rear turn signals.
- Reverse lights: 921
- Center stop light: 912
- Front and rear side markers: 194NA
- License plate lighting: 194 or 7441
Interior and auxiliary listings include 212-2 for the courtesy light, 562 for the dome light, 2825 or 98 for map lights, and 168 or 917 for the trunk light. The automatic and turn-indicator applications are both listed as size 37.