What Size Bulbs Does a 1990 Subaru Legacy Use?
Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.
Installation Difficulty
Easy (Plug and Play)
Est. Replacement Cost
$15 - $40 (Halogen) / $30+ (LED)
What Lighting System Does the 1990 Subaru Legacy Have?
The 1990 Subaru Legacy utilizes a refined lighting configuration featuring 14 distinct bulb positions. It features an extensive lighting system powered by a halogen-based setup where a single 9004 LED dual-filament bulb handles both low and high beam duties within the same reflector. This model belongs to the early years of the Legacy's 1990-2022 production span.
Can You Put LED Bulbs in a 1990 Subaru Legacy?
Upgrading to LED is one of the most effective ways to modernize your Subaru's appearance and safety profile. Since your Legacy uses a single 9004 LED bulb for both high and low beams, ensure your chosen LED kit is "dual-beam" compatible. This allows the LED circuitry to mimic the two-filament design of the original halogen bulb. Don't forget the LED Fog Light fog lights; switching these to LED can dramatically improve your visibility in adverse weather.
1990 Subaru Legacy Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
| Low Beam | 9004 LED | Buy 9004 LED → |
| High Beam | 9004 LED | Buy 9004 LED → |
| Fog Light | LED Fog Light | Buy LED Fog Light → |
| Brake Light | 912 LED | Buy 912 LED → |
| Side Marker | 67 LED | Buy 67 LED → |
| Turn Signal Front | 921 LED | Buy 921 LED → |
| Turn Signal Rear | 1156 LED | Buy 1156 LED → |
| Reverse Light | 1156 | Buy 1156 → |
| Dome Light | DE3175 or 158 | Buy DE3175 or 158 → |
| License Plate | 194 | Buy 194 → |
| Map Light | DE3175 | Buy DE3175 → |
| Parking Light | 67 | Buy 67 → |
| Trunk Light | 168 | Buy 168 → |
| Tail Light | 1157 | Buy 1157 → |
How do the 1990 Subaru Legacy's bulbs compare to other years?
The 1991 model continues with the same bulb sizes.
This bulb configuration covers the 1990–1991 model years. 1991 →
Finding the best installation guide...