The International 1200D headlight bulb utilizes an H6024 size for both high beam and low beam functions. The replacement chart covers 1969 to 1970 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, conforming to ANSI standards recognized in both the United States and Canada.
Unlike bulb-and-housing systems, the H6024 is a sealed beam design, meaning the lens, reflector, and filament are fused into a single unit. When the filament fails, the entire assembly requires replacement rather than just an internal bulb.
The International 1200D uses the H6024 for both the high beam and low beam headlight positions across the 1969-1970 model years, meaning a single bulb type serves both functions.
The shared H6024 fitment across both beam positions is a characteristic of older sealed beam headlight systems, where a single round unit often housed separate filaments or was paired with an identical unit to handle both beam functions.
The ANSI standardization of the H6024 means the unit conforms to fixed dimensional and photometric requirements, allowing replacement units from different manufacturers to be interchangeable as long as they carry the same designation.