Ferrari 328 GTB License Plate Bulb Size

The Ferrari 328 GTB license plate light requires a bulb with the specific size 67 for proper installation and function. Data for the lighting components covers the period from 1986 through 1989.

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
1986-1989	67

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67

Other Locations

Additional Notes

The Ferrari 328 GTB uses the ANSI 67 bulb for its license plate lighting across all documented model years, spanning 1986-1989.
The 67 is a single-filament bulb, meaning it serves only one lighting function, which in this application is license plate illumination.
The 67 bulb operates on a 12-volt electrical system at 8 watts, consistent with standard automotive low-voltage architecture.
It uses a BA15s bayonet base, a single-contact fitting where the "s" denotes a single pin, as opposed to the dual-contact BA15d variant.
The 67 is classified as a lower wattage variant of the 1156 bulb. Both share the BA15s bayonet base, but the 1156 operates at a higher wattage, making the two non-interchangeable despite their physical similarities.
The ANSI 67 designation indicates the bulb conforms to standards recognized in the United States and Canada, reflecting a North American specification framework.