International WorkStar 7700 high beam and low beam headlight bulbs both use the H6024 size. The replacement chart covers vehicle production years spanning 2008 to 2012.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H6024 is an ANSI-standardized 7-inch round sealed beam unit rated at 12 volts, used across the North American market in both the United States and Canada.
Unlike bulb-and-reflector assemblies, the H6024 is a sealed beam unit, meaning the lens, reflector, and filament are fused into a single non-serviceable assembly that is replaced as a whole when the filament fails.
The International WorkStar 7700 uses the H6024 for both high beam and low beam headlight positions across the 2008-2012 model years.
Because the same H6024 unit serves both beam functions, the high beam and low beam positions on the WorkStar 7700 are filled by physically identical sealed beam assemblies.
The H6024 designation follows ANSI standardization, which means units from different manufacturers sharing this designation conform to the same physical and electrical specifications, allowing interchangeability between compliant products.