Ford Bronco front side marker bulbs utilize 194NA, 3157, or 1157 bulb sizes, while rear side marker bulbs use WT21/7W or 3157 sizes depending on model generation. The replacement chart covers 1972 through 2023 production years with corresponding bulb size specifications for each generation.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.