Pontiac GTO Engine Compartment Light Bulb Size
The Pontiac GTO engine compartment light uses bulb sizes 1003, 93, and P21W depending on the specific application. Data for the bulb sizes covers the range from 1964 to 1972.
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 Size |
|---|---|
| 1972 | 1003 |
| 1968-1970 | P21W |
| 1967 | 93 |
| 1964-1966 | P21W |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1003 |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 93 |