44 Vehicles
1003 Bulb Fitment Guide
The 1003 bulb family is used by 44 vehicles from 4 makes. Commonly found in Trunk Light, Dome Light, Brake Light positions.
Positions
3
Trunk Light, Dome LightVehicles
44
Makes
4
Compare retailer options
We may earn a commission from links marked Affiliate. Unmarked retailer links may be plain search links. Always verify bulb fitment before purchasing.
Top Compatible Vehicles
Showing 8 high-volume model groups across 4 makes. This bulb appears in 8 model groups overall.
| Model | Years | Positions | View |
|---|---|---|---|
| Justy | 1989–1995 | Brake Light | Details |
For exact fitment, search your year, make, and model or choose a specific vehicle page. Full compatibility is still represented in the page totals above.
Frequently Asked Questions
The 1003 bulb family is listed for 44 vehicles from 4 makes including Cadillac, Chevrolet, Ford, Subaru. Browse the compatibility list below and verify your exact vehicle before buying.
LED replacements are available for many 1003 applications, but beam pattern, physical clearance, electronics, and legal use can vary by housing. Check seller fitment notes and verify the existing bulb first.
The 1003 bulb family appears in these positions in our database: Trunk Light, Dome Light, Brake Light. The exact position depends on year, make, model, and lighting package.
Cost depends on brand, technology, and whether you are buying a halogen replacement or LED conversion. Compare products that list the exact 1003 bulb family and your vehicle fitment.
1003 products share the same bulb family designation, but output, technology, heat behavior, and beam pattern vary. Choose a product that matches your housing and intended use.
Related Bulb Types
These bulb families are linked because they share aliases, common lighting positions, or similar vehicle coverage in the database.