Buick Roadmaster Trunk Bulb Size
The Buick Roadmaster trunk bulb utilizes 2 distinct sizes: 1003 and 89, with each bulb size corresponding to specific vehicle configurations. The replacement chart covers vehicle production years spanning 1954 to 1991, detailing bulb size specifications across this period.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Bulb Size by Year Range
| Years | Bulb Type | Shop |
|---|---|---|
| 1991 | 1003 | Check Price |
| 1954-1958 | 89 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1003 | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 89 | Check Price |