The International S1724 uses H6024 bulb size for both high beam and low beam headlight applications. Replacement chart data spans 1980 to 1984 model 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 an ANSI-standardized 7-inch round sealed beam unit operating at 12 volts, used across all listed model years of the International S1724 for both high beam and low beam headlight positions.
The International S1724 (1980-1984) uses the H6024 bulb size for both the high beam and low beam headlight positions, meaning a single bulb type serves both functions across the entire headlight system.
As a sealed beam unit, the H6024 does not contain a replaceable bulb element. The entire assembly is replaced as one unit when the light fails or is damaged.
The H6024 follows ANSI standardization recognized in both the United States and Canada, meaning the unit conforms to a defined set of performance and physical specifications shared across compliant manufacturers.
The 7-inch round form factor of the H6024 is one of the most widely produced sealed beam sizes in North American automotive history, which generally supports broad cross-brand availability of replacement units.
Because the same H6024 unit is specified for both the high beam and low beam positions, the S1724 uses a dual-headlight configuration where each sealed beam housing handles a single beam function rather than a combined high/low unit.