The International C1100 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1963 to 1964 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 the sole bulb type listed across all headlight positions for the International C1100, covering both 1963-1964 model years.
The H6024 is a 7-inch round sealed beam unit operating at 12 volts, conforming to the ANSI standard recognized in the United States and Canada.
Sealed beam units such as the H6024 differ from conventional bulb designs in that the reflector, lens, and filament are fused into a single glass assembly, meaning the entire unit is replaced rather than an internal bulb.
The H6024 specification applies equally to both the high beam and low beam headlight positions on the International C1100, indicating the vehicle uses a dual-function sealed beam arrangement rather than separate dedicated units for each function.