The International B112 headlight bulb uses a H6024 size for both high beam and low beam applications. The replacement chart covers vehicle production spanning 1959 to 1960.
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 conforms to ANSI standards as recognized in the United States and Canada.
Unlike bulb-and-housing systems, the H6024 is a sealed beam unit, meaning the lens, reflector, and filament are fused into a single assembly. When the filament fails, the entire unit is replaced rather than an internal bulb.
The International B112 uses the H6024 for both the high beam and low beam headlight positions across the 1959-1960 model years. A single sealed beam unit therefore serves dual functions in this application.
Because the H6024 is an ANSI-standardized sealed beam type, fitment is governed by the physical and electrical standard rather than by proprietary vehicle-specific dimensions, which generally allows cross-brand substitution within that standard.