The International R131 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 the sole bulb type listed across all positions in the International R131 headlight specifications, covering both high beam and low beam functions 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 the United States and Canada.
As a sealed beam unit, the H6024 does not contain a replaceable filament or bulb element. When the unit fails, the entire assembly is replaced rather than an internal component.
The high beam and low beam headlight positions on the International R131 share the same H6024 specification across all listed years, indicating a single sealed beam unit serves both functions rather than separate dedicated bulbs for each mode.
The ANSI standardization of the H6024 means the unit conforms to a fixed, regulated form factor, which historically allowed interchangeability across different vehicle makes and models using the same sealed beam standard.