The Dodge B3500 brake light utilizes 2458 and 3157 bulb sizes for the specific lighting components located at the rear of the vehicle. Data for the specified lighting requirements covers the period from 1995 through 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Dodge B3500 uses the 3157 bulb for brake lighting across the 1995-1998 model years.
The 3157 is a dual-filament T25 wedge bulb rated at 12V with a 27W/7W output, where the higher wattage filament serves the brake function and the lower wattage filament serves a secondary function such as running lights.
As an ANSI-standardized bulb, the 3157 conforms to a shared specification recognized across the United States and Canada, meaning equivalent bulbs from different manufacturers share the same electrical and physical characteristics.
The center high mount stop light on the Dodge B3500 does not use a uniform bulb size across the 1995-1998 model years, with three different bulb sizes specified depending on the year.
The 1998 Dodge B3500 center high mount stop light takes a 921 bulb, rated at 12V and 16W.
The 1996-1997 model years share the 922 bulb for the center high mount stop light, also rated at 12V and 16W.
The 1995 Dodge B3500 center high mount stop light uses the 912 bulb, which is a variant of the 921 but draws less power at 12W versus 16W.
The 921, 922, and 912 are all T15 wedge bulbs conforming to ANSI standards, meaning they share the same physical base and housing form, though their wattage ratings differ.
Because the 912 draws 12W compared to the 16W of the 921 and 922, substituting between these T15 variants without confirming the correct wattage for the socket may result in improper light output or electrical incompatibility.
The dual-filament design of the 3157 distinguishes it from the single-filament T15 bulbs used in the center high mount stop light, as the latter position requires only a single-function brake signal.