2021 Subaru Legacy bulb fitment varies by lighting configuration. The low-beam headlight is listed as either an LED unit or an H11 bulb, while the high beam uses either LED or a 9005 bulb. Check the existing headlight assembly before ordering, since these options are not interchangeable without confirming the vehicle’s equipment.
- Fog lights, daytime running lights, parking lights, front side markers, tail lights, brake lights, and the center stop light are listed as LED.
- Front turn signals use 7444NA bulbs, and rear turn signals use 7440A bulbs.
- Reverse lights use 921 bulbs; rear side markers use 168NA bulbs.
- License plate and interior locations may use either 168 or 917 bulbs, depending on the specific application.
- Dome and map lights use DE3175 bulbs, while the trunk light is listed as 194 or 7441.
Confirm the original bulb number or lighting assembly for locations with multiple listings before purchasing a replacement.