The International A120 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1957 to 1958 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 a 7-inch round sealed beam unit operating at 12 volts. It conforms to ANSI standards recognized in both the United States and Canada.
Unlike bulb-and-housing systems, the H6024 does not contain a replaceable bulb element. The entire sealed beam unit is replaced as a single assembly when the light source fails.
The International A120 uses the H6024 for both high beam and low beam headlight positions across the 1957-1958 model years, meaning a single bulb type serves both lighting functions.
The shared H6024 fitment across both beam positions indicates the vehicle relies on a dual-function sealed beam design rather than separate dedicated units for each beam mode.