The Dodge B250 front turn signal uses a 2057 or 1157 bulb size, while the rear turn signal accommodates a 3157, 2057, or 1157 bulb size. The replacement chart covers vehicle production years spanning 1981 to 1994.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 2057 and 1157 bulb types are the most frequently specified across the Dodge B250 turn signal positions, with both sharing the BAY15d bayonet base and dual-filament construction at 12 volts.
The 2057 operates at 26.9W on its high-intensity filament and 8W on its low-intensity filament, while the 1157 operates at 21W and 5W respectively, making the 2057 the higher-output variant of the two despite their physical interchangeability at the base level.
The front turn signal on the Dodge B250 used the 1157 bulb from 1981-1985, then transitioned to the 2057 for the 1986-1994 model years.
Although the 2057 and 1157 share the same BAY15d bayonet base, substituting one for the other results in a difference in output wattage, which can affect turn signal flash rates governed by load-sensitive flasher relays.
The 3157 is a wedge-base bulb of the T25 form factor, which physically differs from the BAY15d bayonet base used by both the 2057 and 1157, making it non-interchangeable with those two types.
The rear turn signal on the 1994 Dodge B250 specifies the 3157, which operates at 27W and 7W, while the 1993 model uses the 2057, representing a direct socket-type change between those two years.
All three bulb types listed in these specifications conform to ANSI standards recognized in both the United States and Canada.
The rear turn signal position shows more variation across model years than the front, with the 1157, 2057, and 3157 each appearing at different points in the production run.