The Plymouth Acclaim brake light utilizes 2458, 3157, and 3057 bulb sizes for the rear lighting system. Data for the specified vehicle covers the range from 1989 to 1995.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Plymouth Acclaim uses three bulb types across its brake lighting system: the 3157, the 3057, and the 921, all of which conform to ANSI standards recognized in both the United States and Canada.
The 3157 and 3057 are both dual-filament wedge bulbs sharing the T25 form factor, rated at 12V with a 27W/7W output split between their two filaments. In automotive brake applications, the higher-wattage filament serves the stop light function while the lower-wattage filament serves the tail light function.
For the Plymouth Acclaim, the brake light position uses the 3057 for model years 1989-1991 and transitions to the 3157 for model years 1992-1995.
Although the 3057 and 3157 share the same T25 wedge base and identical wattage ratings, they are not fully interchangeable in all vehicles. The 3157 uses a standard dual-contact base, while the 3057 uses an asymmetric contact configuration designed to prevent incorrect installation. Substituting one for the other may cause fitment or electrical issues depending on the socket design.
The Center High Mount Stop Light on the Plymouth Acclaim uses the 921 bulb across all model years from 1989-1995, making it the only brake-related position with no change in bulb specification across the vehicle's production run.
The 921 is a single-filament wedge bulb in the T15 form factor, rated at 12V and 16W. As a single-filament type, it operates only in an on/off capacity, which is consistent with its use in a dedicated stop light position rather than a combined stop/tail application.
The T15 base of the 921 is physically smaller than the T25 base shared by the 3057 and 3157, meaning the 921 is not interchangeable with either of the other two bulb types used in the Acclaim's brake lighting system.