The International S2524 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 12 volts. 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 internal bulb.
The International S2524 uses the H6024 for both the high beam and low beam headlight positions across the 1980-1982 model years. A single bulb type serving both functions is characteristic of older sealed beam headlight systems, where one unit houses dual filaments to produce both beam patterns.
Because the H6024 is a sealed beam unit rather than a replaceable-bulb housing, standard bulb interchangeability considerations do not apply in the conventional sense. Replacement requires sourcing a compatible sealed beam unit rather than selecting an individual bulb.
The ANSI standardization of the H6024 means the unit conforms to fixed physical and electrical specifications shared across manufacturers. This standardization historically allowed sealed beam units to be sourced from multiple suppliers without fitment conflicts, provided the replacement unit carries the same ANSI designation.