The Chrysler Aspen brake light requires a 3057 bulb size for proper installation and operation within the rear lighting assembly. Data for the specified component covers the range from 2007 to 2009.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Chrysler Aspen uses the 3057 bulb for brake lights across the 2007-2009 model years.
The 3057 is an ANSI-standard wedge bulb rated at 12V with a dual-filament design drawing 27W on the high filament and 7W on the low filament. The T25 designation refers to the bulb's wedge base size.
The dual-filament construction of the 3057 allows it to serve both brake and tail light functions within a single housing, with each filament handling a separate lighting role.
The center high mount stop light on the Chrysler Aspen uses the 921 bulb across the 2007-2009 model years.
The 921 is an ANSI-standard single-filament wedge bulb rated at 12V and 16W. The T15 designation refers to its wedge base size, which is physically smaller than the T25 base of the 3057.
Because the 3057 and 921 use different base sizes, T25 and T15 respectively, the two bulb types are not interchangeable with each other despite both being wedge-style bulbs.