Buick Lucerne inner tail light uses a 194 bulb size while the outer tail light requires a 3057 bulb size. The replacement chart covers 2006 through 2011 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Buick Lucerne uses two distinct bulb types across its tail light system: the 194 for the inner tail light position and the 3057 for the outer tail light position, both applying uniformly across the 2006-2011 model years.
The 194 bulb is an ANSI-standardized miniature wedge type, classified under the T10 form factor, operating at 12 volts and drawing 3.78 watts.
The T10 designation refers to a tubular bulb with a wedge base, where the base itself acts as the electrical contact rather than a separate metal cap or pins.
The 3057 bulb is an ANSI-standardized dual-filament wedge type, classified under the T25 form factor, operating at 12 volts with a power draw of 27 watts on the high filament and 7 watts on the low filament.
The dual-filament design of the 3057 allows a single bulb to serve two lighting functions, typically stop and tail, within the outer tail light housing of the Buick Lucerne (2006-2011).
Both the 194 and 3057 bulbs conform to ANSI standards recognized in both the United States and Canada, indicating a shared North American specification baseline.
The 194 and 3057 are not interchangeable with each other. The T10 and T25 form factors differ in physical size, wattage, and filament configuration, making each bulb specific to its designated position.
The 3057 belongs to a bulb family that includes similar types such as the 3157, which shares the same base but differs in wattage ratings. Substituting a 3157 for a 3057 in the outer tail light position of the Lucerne is not supported by these specifications.