The International R110 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 the sole bulb type listed across all headlight positions in the International R110 specifications, appearing in both high beam and low beam roles for 1953-1955.
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.
A sealed beam unit integrates the filament, reflector, and lens into a single non-serviceable assembly, meaning the entire unit is replaced rather than an internal bulb component.
Because the H6024 serves both the high beam and low beam positions in the International R110 (1953-1955), a single bulb type covers the full headlight system on this vehicle.
The 7-inch round form factor of the H6024 is a standardized size, which historically allowed interchangeability across many North American vehicle makes and models of the same era that shared the same ANSI-specified housing.
The 12-volt rating of the H6024 reflects compatibility with a 12-volt electrical system, a detail relevant when sourcing a replacement unit for the correct operating voltage.