The International S100 uses an H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1956 to 1957 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 conforms to ANSI standards as recognized in the United States and Canada.
Unlike bulb-and-reflector assemblies, the H6024 is a sealed beam unit, meaning the lens, reflector, 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 S100 uses the H6024 for both high beam and low beam headlight positions across the 1956-1957 model years, making it the sole headlight bulb type in these specifications.
The shared H6024 fitment across both beam positions indicates a dual-filament sealed beam configuration, where a single unit serves both high and low beam functions within the same housing.
The H6024 designation follows ANSI standardization, which means units from different manufacturers carrying the same designation are electrically and physically interchangeable, provided they meet the same standard.