The International S1924 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production spanning 1980 to 1982.
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-housing systems, the sealed beam design integrates the filament, reflector, and lens into a single unit, meaning the entire assembly is replaced rather than an individual bulb.
The International S1924 uses the H6024 across both the high beam and low beam headlight positions for the 1980-1982 model years. A single bulb type serving both functions is a characteristic of certain sealed beam configurations where one unit handles the full headlight role.
Because the H6024 is a sealed beam unit rather than a socketed bulb, standard bulb interchangeability considerations do not apply in the conventional sense. Replacement requires sourcing a compatible sealed beam assembly rather than a drop-in bulb substitute.