The International A112 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1957 to 1958 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.
Unlike bulb-and-socket assemblies, the H6024 is a sealed beam unit, meaning the reflector, lens, and filament are fused into a single non-serviceable housing. When the filament fails, the entire unit is replaced rather than an internal bulb.
The International A112 uses the H6024 for both the high beam and low beam headlight positions across the 1957-1958 model years, meaning a single sealed beam type serves both lighting functions.
Because the H6024 fills both the high beam and low beam roles in this application, the two positions are not served by separate or distinct bulb types.