The International 1300D headlight bulb uses an H6024 size for both high and low beam functions. The replacement chart covers 1969 to 1970 production years with corresponding bulb 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-based headlight systems, the H6024 is not a replaceable bulb. When the light fails, the entire sealed beam unit is replaced as a single assembly.
The International 1300D uses the H6024 for both high beam and low beam headlight positions across the 1969-1970 model years, meaning a single bulb type serves both functions.
The use of one sealed beam type for both beam positions is a characteristic of certain older single-unit headlight designs, where the sealed beam housing contains the filaments for both functions internally.
Because the H6024 follows an ANSI standard, units produced by different manufacturers to that specification are generally interchangeable, provided the replacement unit also meets the H6024 standard.