For the 2021 Tesla Model 3, both the low-beam and high-beam headlights are listed as LED. The supplied fitment data does not identify separate bulb codes or any projector versus non-projector headlight variation, so confirm the lamp assembly and vehicle configuration before ordering a replacement.
Other exterior lighting is also listed as LED, including the fog lights, front and rear turn signals, daytime running lights, parking lights, front and rear side markers, tail lights, brake lights, center stop light, reverse lights, and license plate light.
Interior applications use LED lighting as well. This includes the dome light, glove box light, trunk light, and the general interior-lighting entry. Since every listed position uses LED rather than a conventional bulb size, replacement requirements may depend on the specific lamp assembly. Check the original component or service information to confirm whether the light is replaced as an assembly or uses a serviceable LED unit.