2018 Subaru BRZ headlight fitment: The low-beam and high-beam headlights use LED lighting, so the supplied fitment data does not list a replaceable halogen bulb size for either function. The fog lights, daytime running lights, parking lights, brake lights, center stop light, tail lights, and rear turn signals are also LED-equipped.
- Front turn signals: LED.
- Reverse lights: 921.
- Front side marker: 194NA.
- Rear side marker: LED.
- License plate lights: 168 or 917.
- Dome, interior, and trunk lighting: DE3175 is listed for the dome light, while 168 or 917 are listed for interior and trunk applications.
For headlight service, confirm that the vehicle retains its original LED lighting assembly before ordering replacement parts. Since no projector or non-projector variation is specified in the supplied data, this fitment summary does not assign different headlight bulbs by housing type.