The International B110 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 12V. It conforms to ANSI standards recognized in both the United States and Canada, meaning its physical and electrical characteristics follow a regulated specification rather than a proprietary design.
Unlike bulb types that allow the light source to be replaced independently, the H6024 is a sealed beam unit in which the filament, reflector, and lens are fused into a single assembly. When the filament fails, the entire unit requires replacement.
The International B110 uses the H6024 for both the high beam and low beam headlight positions across the 1959-1960 model years. A single bulb type serving both functions is characteristic of early sealed beam systems, where a multi-filament design within one unit handled both lighting modes.
Because the H6024 follows an ANSI-standardized form factor, units produced by different manufacturers are generally interchangeable at the fitment level, provided the replacement unit also carries the H6024 designation and meets the same voltage rating.