Chrysler Aspen front and rear side marker bulbs utilize 168 and 3057 bulb sizes respectively. The replacement chart covers 2007 to 2009 vehicle 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 Chrysler Aspen uses two distinct bulb types across its front and rear side marker positions for the 2007-2009 model years.
The 168 bulb is the specified front side marker size for the 2007-2009 Chrysler Aspen. It is a T10 miniature wedge bulb rated at 12V and 4.9W, conforming to ANSI standards for the US and Canadian markets.
The T10 form factor of the 168 bulb refers to a tubular wedge-base design with a width of approximately 10 millimeters, commonly used in low-current marker and courtesy lighting applications.
At 4.9W, the 168 bulb draws relatively little power, which is consistent with its role as a passive side marker rather than a primary lighting source.
The 3057 bulb is the specified rear side marker size for the 2007-2009 model years. It is a T25 dual-filament wedge bulb rated at 12V with a 27W high filament and a 7W low filament, also conforming to ANSI standards for the US and Canadian markets.
The dual-filament construction of the 3057 bulb allows it to serve two brightness levels within a single housing, which is a characteristic shared with bulbs used in combined stop and tail light functions.
The T25 designation of the 3057 indicates a larger wedge-base body than the T10 used at the front, meaning the two bulb types are not physically interchangeable between positions.
The significant wattage difference between the 168 (4.9W) and the 3057 (27W/7W) reflects the differing electrical demands of front and rear marker circuits on the Aspen.