2021 Jeep Gladiator bulb fitment starts with matching H13 bulbs for both the low-beam and high-beam headlights. The supplied fitment data does not identify a separate projector or non-projector headlight variation, so confirm the original bulb before ordering if your truck has a different headlamp configuration.
- Fog lights: 2504 LED.
- Front turn signals: compare the original bulb before purchase; the listed options are 7442NA or 7440A.
- Rear lighting: brake, tail, and rear turn signals use 7443 bulbs.
- Daytime running lights: 7443.
- Parking lights: 7442NA.
- Center stop, license plate, and rear side-marker lights: listed as LED.
- Interior: dome light 912, ash tray light 194, and automatic applications may use 2825 or 658.
Reverse-light fitment is not listed in the supplied data.