What Size Bulbs Does a 2004 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 2004 Subaru Legacy Have?
When it comes to nighttime visibility, the 2004 Subaru Legacy relies on an arrangement of 13 specialized bulbs. It features an extensive lighting system powered by a halogen-based setup where a single 9007 LED dual-filament bulb handles both low and high beam duties within the same reflector. This model belongs to the mid years of the Legacy's 1990-2019 production span.
Can You Put LED Bulbs in a 2004 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 9007 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 H3 LED fog lights; switching these to LED can dramatically improve your visibility in adverse weather.
2004 Subaru Legacy Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
| Low Beam | 9007 LED | Buy 9007 LED → |
| High Beam | 9007 LED | Buy 9007 LED → |
| Fog Light | H3 LED | Buy H3 LED → |
| Brake Light | 912 LED | Buy 912 LED → |
| Side Marker | 1157NA LED | Buy 1157NA LED → |
| Turn Signal Front | 1157NA LED or 1156NA LED | Buy 1157NA LED or 1156NA LED → |
| Turn Signal Rear | 7440 LED | Buy 7440 LED → |
| Reverse Light | 1156 | Buy 1156 → |
| Dome Light | DE3175 | Buy DE3175 → |
| License Plate | 168 | Buy 168 → |
| Map Light | DE3175 | Buy DE3175 → |
| Parking Light | 1157NA | Buy 1157NA → |
| Trunk Light | 2825 | Buy 2825 → |