The Dodge B3500 front side marker bulb uses 3457 or 194 size bulbs, while the rear side marker bulb requires a 168 size bulb. The replacement chart covers 1995 to 1998 model 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 Dodge B3500 uses three distinct bulb types across its front and rear side marker positions: the 3457, 194, and 168, all of which conform to ANSI standards recognized in both the United States and Canada.
The 194 and 168 are both miniature wedge bulbs of the T10 form factor operating at 12V, making them physically similar in size and shape despite carrying different wattage ratings.
Although the 194 and 168 share the same T10 wedge form factor, their wattage differs: the 194 draws 3.78W while the 168 draws 4.9W. This distinction means the two bulbs are not interchangeable despite their physical resemblance.
The Dodge B3500 front side marker for the 1998 model year uses the 3457, a dual-filament T25 wedge bulb rated at 12V with a 27W/7W output, which is a notably different specification from the single-filament 194 used in the same position for 1995-1997.
The dual-filament design of the 3457 means it contains two separate filaments within a single bulb, each operating at a different wattage, a characteristic that distinguishes it from the single-filament 194 and 168 types also present in this vehicle's specifications.
The rear side marker position on the Dodge B3500 uses the 168 bulb consistently across all four model years covered, from 1995-1998.
The front side marker position uses the 194 bulb for 1995-1997 and transitions to the 3457 for 1998, indicating that the two front side marker years are not served by the same bulb type and require separate part selection.
The T25 designation of the 3457 reflects a larger wedge base than the T10 used by both the 194 and 168, meaning the 3457 is physically incompatible with sockets designed for T10 bulbs.