The International S1624 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1980 to 1982 vehicle 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, standardized under ANSI specifications for use in the United States and Canada.
As a sealed beam design, the H6024 does not contain a replaceable bulb element. When the unit fails, the entire assembly is replaced as a single component.
The International S1624 uses the H6024 for both the high beam and low beam headlight positions across the 1980-1982 model years, meaning a single bulb type serves both functions on this vehicle.
The use of one sealed beam unit across both beam positions is a characteristic of older dual-headlight systems, where separate high and low beam housings each received their own sealed unit rather than sharing a single multi-function lamp.
The H6024 designation follows ANSI standardized naming, which means units from different manufacturers carrying the same designation are generally interchangeable in terms of physical fit and electrical ratings.