The Pontiac Firebird tail light utilizes unique bulb sizes 1157, 2057, 194, and 3057 depending on the specific version of the vehicle. Available data covers the range of 1967 through 1997 for the components mentioned.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 2057 bulb is the most frequently specified type across the Pontiac Firebird tail light data, appearing in both the inner and outer tail light positions across multiple model years.
The 2057 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with filaments drawing 26.9W and 8W respectively, making it suitable for combined stop and tail light functions within a single housing.
The 1157 is also a dual-filament BAY15d bayonet bulb, rated at 12V with filaments drawing 21W and 5W, and it shares the same base type as the 2057 despite differing wattage ratings.
Because the 2057 and 1157 share the BAY15d bayonet base, they are physically interchangeable in terms of socket fit, though their filament wattages differ and substitution may affect light output intensity.
The outer tail light position on the Pontiac Firebird uses a 3057 bulb for the 1995 model year, while the 1996-1997 model years use a 2057 in that same position, indicating a mid-generation specification change.
The 3057 is a dual-filament wedge bulb in a T25 form factor, rated at 12V with filaments drawing 27W and 7W, and it does not share the BAY15d bayonet base of the 2057 or 1157.
The 194 is a single-filament miniature wedge bulb in a T10 form factor, rated at 12V and 3.78W, which places it in a distinctly different category from the dual-filament bulbs used elsewhere in the Firebird tail light system.
The outer tail light on the Firebird specifies the 194 bulb for the 1993-1994 model years, while surrounding years in that position call for dual-filament bulbs, reflecting a position-specific fitment distinction.
All four bulb types listed across the Firebird tail light specifications conform to ANSI standards recognized in both the United States and Canada.
The outer tail light position spans the widest range of bulb types across the full model history, with the 1157 specified for 1967-1982, the 2057 for 1983-1992 and 1996-1997, the 194 for 1993-1994, and the 3057 for 1995.