The International S120 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1956 to 1957 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 the sole bulb type across all listed positions and years for the International S120, covering both high beam and low beam headlight applications for 1956-1957.
The H6024 is a 7-inch round sealed beam unit operating at 12 volts, conforming to ANSI standards recognized in the United States and Canada.
Sealed beam construction means the lens, reflector, and filament are fused into a single glass unit. When the filament fails, the entire assembly requires replacement rather than an internal bulb swap.
The H6024 serves dual duty in the International S120, functioning as both the high beam and low beam source. This indicates a single-unit, non-separate-beam headlight system for this vehicle.
Because the H6024 is an ANSI-standardized sealed beam, physical fitment across different vehicle makes sharing the same standard is possible, though electrical and optical compatibility should be confirmed before substitution.