The International R102 high beam and low beam headlight bulbs both utilize the H6024 bulb 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 a 7-inch round sealed beam unit operating at 12 volts. It conforms to ANSI standards as recognized in the United States and Canada, meaning its physical and electrical characteristics are governed by a standardized specification rather than a proprietary design.
A sealed beam unit differs from a conventional bulb in that the filament, reflector, and lens are fused into a single assembly. When the filament fails, the entire unit is replaced rather than an internal bulb element.
The International R102 uses the H6024 across both the high beam and low beam headlight positions for the 1953-1955 model years, meaning a single bulb type serves both lighting functions on this vehicle.
Because the H6024 fills both the high beam and low beam roles, the R102 headlight system does not use separate bulbs for each function. This arrangement was typical of single-filament sealed beam systems where switching between beams was handled by activating different lamp units rather than different filaments within one lamp.
The ANSI standardization of the H6024 means that units produced by different manufacturers are interchangeable at the physical and electrical level, provided they conform to the same standard designation.