Chrysler Concorde front and rear turn signal bulbs utilize 3157NA, 3157, and 3057 bulb sizes depending on location and model variation. The replacement chart covers 1993 through 2004 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 3157NA, 3157, and 3057 bulbs specified for the Chrysler Concorde are all ANSI-standard dual-filament T25 wedge bulbs rated at 12V with a 27W/7W power split, where the higher wattage filament serves the turn signal function and the lower wattage filament serves a secondary function such as parking or running light.
The sole distinction between the 3157NA and the 3157 is that the 3157NA features natural amber-tinted glass, which produces an amber output without relying on a colored lens, while the 3157 uses clear glass.
The 3057 shares the same T25 wedge base and 12V/27W/7W electrical ratings as the 3157, but the two are not directly interchangeable due to differences in filament positioning within the bulb, which affects how the contacts align with the socket.
For the front turn signal position, the Chrysler Concorde uses the 3157NA for model years 1993-1997 and 2002-2004, and the standard 3157 for model years 1998-2001.
For the rear turn signal position, the Concorde uses the 3157 for model years 1993-1994 and 1998-2004, while the 3057 is specified for model years 1995-1997.
Because the 3057 and 3157 have different internal filament configurations despite sharing the same base type, substituting one for the other in the rear turn signal socket of a 1995-1997 Concorde risks incorrect filament alignment and potential circuit malfunction.
The natural amber glass of the 3157NA used in the front turn signal positions of the 1993-1997 and 2002-2004 Concorde indicates those model years relied on the bulb itself, rather than an amber-tinted lens, to meet amber color output requirements.
All three bulb types across both turn signal positions conform to ANSI standards applicable in both the United States and Canada, reflecting a shared regulatory framework for automotive lighting in North America.