The International R100 high beam and low beam headlight bulbs both utilize the H6024 size. The replacement chart covers vehicle production spanning 1953 to 1955.
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 listed across all positions in the International R100 headlight specifications, appearing in both the high beam and low beam roles for the 1953-1955 model years.
The H6024 is a 7-inch round sealed beam unit operating at 12 volts, conforming to ANSI standards recognized in both the United States and Canada.
As a sealed beam unit, the H6024 does not contain a separately replaceable filament or bulb element. The entire assembly is the replaceable component, meaning the whole unit is swapped out upon failure rather than an internal bulb.
The International R100 uses the same H6024 unit for both high beam and low beam functions, indicating that a single sealed beam type serves dual lighting roles on this vehicle.