The International B102 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1959 to 1960 vehicle production 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 H6024 is a 7-inch round sealed beam unit operating at 12 volts. It follows the ANSI standard used in the United States and Canada, meaning the entire housing, lens, and filament are fused into a single assembly. When the filament fails, the whole unit is replaced rather than an individual bulb.
The International B102 uses the H6024 for both the high beam and low beam headlight positions across the 1959-1960 model years, meaning a single bulb type serves the full headlight system on this vehicle.
Because the H6024 is a sealed beam unit rather than a bulb-and-housing system, fitment is defined by the physical form factor of the sealed beam itself. The 7-inch round format was a standardized size under ANSI, which allowed sealed beams of this type to be interchangeable across many vehicles of the era that shared the same specification.