The International R120 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1953 to 1955 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 a 7-inch round sealed beam unit operating at 12 volts, standardized under ANSI specifications for use in the United States and Canada.
As a sealed beam design, the H6024 does not contain a replaceable bulb element. When the unit fails, the entire assembly is replaced as a single component.
The International R120 uses the H6024 across both the high beam and low beam headlight positions for the 1953-1955 model years.
Because the same H6024 unit serves both beam functions on the International R120, the high and low beam positions share identical replacement parts with no distinction between the two.