Buick Roadmaster Parking Brake Indicator Bulb Size
The Buick Roadmaster parking brake indicator requires bulb size PC74 or 257 depending on the specific application. Data for the bulb sizes covers the range from 1958 to 1991.
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
If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 1991 | PC74 | T5+PCB | Check Price |
| 1958 | 257 | 257 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V, 1.4W. | PC74 | Check Price |
| ANSI standard (US & Canada). Festoon or BA9s base instrument bulb. 12V, 2W. | 257 | Check Price |