The International B130 headlight bulb uses the H6024 size for both high beam and low beam 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 non-serviceable assembly. When the filament fails, the whole unit is replaced rather than an internal bulb.
The International B130 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 both functions on this vehicle.
Because the H6024 is a sealed beam rather than a bulb-in-housing design, fitment is determined by the physical size and connector of the sealed unit itself. The 7-inch round format was a standardized size, which means H6024 units from different manufacturers are generally interchangeable as long as they conform to the ANSI specification.
The shared H6024 fitment across both beam positions on the International B130 suggests the vehicle uses a dual-filament sealed beam arrangement, where a single unit contains separate filaments for high and low beam output.