Oldsmobile Fiesta License Plate Bulb Size

The Oldsmobile Fiesta license plate light requires bulb size 1155 or 67 depending on the specific application. Data for the bulb requirements covers the range from 1953 to 1964.

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
1964	1155
1957-1963	67
1953	67

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	1155
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67

Other Locations

Additional Notes

The bulb 67 is the most frequently specified license plate bulb for the Oldsmobile Fiesta, covering model years 1957-1960, 1962-1963, and 1953.
The bulb 67 is an ANSI-standard single-filament bulb rated at 12V and 8W, fitted with a BA15s bayonet base.
The 1964 Oldsmobile Fiesta departs from the pattern of prior years, requiring the 1155 bulb instead of the 67.
The 1155 is an ANSI-standard single-filament bulb rated at 12V and 21W, also fitted with a BA15s bayonet base.
The 1155 draws significantly more wattage than the 67, at 21W versus 8W, which affects the brightness output of the license plate lamp.
Both the 67 and the 1155 share the BA15s bayonet base, meaning the two bulbs are physically interchangeable in terms of socket fitment, though their wattage ratings differ.
Both bulbs are classified as variants of the 1156, with the 67 representing a lower-wattage version and the 1155 a closer-wattage variant of that same base type.
Despite the shared base type, substituting a 67 for a 1155 or vice versa in the Oldsmobile Fiesta would result in a wattage mismatch relative to the original specification for that model year.
Both bulbs conform to ANSI standards recognized in the United States and Canada.