Chevrolet Cavalier Tail Light Bulb Size

Additional Notes

• The 2057 bulb is the most frequently specified tail light bulb across the Chevrolet Cavalier lineup, covering model years 1982-1990 and 1993, as well as 1985-1989.
• The 3057 is a dual-filament wedge bulb rated at 12V with a high filament output of 27W and a low filament output of 7W, conforming to the T25 form factor under the ANSI standard recognized in both the US and Canada.
• The 2057 operates on a BAY15d bayonet base at 12V, with filament ratings of 26.9W and 8W, and is described as a brighter variant of the 1157 bulb type.
• The 3057 and 2057 are both dual-filament bulbs, meaning each serves two lighting functions, typically stop and tail, within a single housing.
• The 194 is a single-filament miniature wedge bulb conforming to the T10 form factor, rated at 12V and 3.78W, which places it in a significantly lower wattage class than either the 3057 or 2057.
• The Chevrolet Cavalier (2000-2005) uses the 3057 bulb exclusively across those six model years, indicating a consistent tail light specification during that period.
• The 3057 uses a wedge base while the 2057 uses a BAY15d bayonet base, making the two bulbs physically incompatible with each other despite both being dual-filament types rated at 12V.
• The 194 bulb, specified for the 1992 and 1994 model years, is not a dual-filament type and carries a substantially lower wattage than the other two bulb types listed in these specifications.
• All three bulb types, the 3057, 194, and 2057, conform to ANSI standards applicable in both the US and Canada.
• The 1993 Cavalier is specified with the 2057, while the 1994 model uses the 194, reflecting a change in tail light bulb type between those two consecutive years.