International TerraStar high beam and low beam headlight bulbs use H6054 size. Replacement chart covers 2010 to 2018 vehicle production years with bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The International TerraStar uses the H6054 bulb for both high beam and low beam headlights across all model years from 2010-2018.
The H6054 is a sealed beam unit, meaning the lens, reflector, and filament are fused into a single housing rather than a separate replaceable bulb inside a housing assembly.
Sealed beam units like the H6054 follow a standardized rectangular format, which allows for cross-brand interchangeability as long as the H6054 designation matches exactly.
The H6054 operates on a halogen light source, producing light through a tungsten filament enclosed in halogen gas, which extends filament life and maintains higher luminous output compared to older incandescent sealed beams.
Because the International TerraStar (2010-2018) uses the same H6054 unit for both high and low beam functions, the vehicle relies on a dual-filament sealed beam design, where a single unit contains separate filaments for each beam mode.
The H6054 is a widely standardized part number in North American automotive and commercial vehicle applications, which means replacement units are produced by multiple manufacturers under the same designation.
When replacing the H6054 on the TerraStar, the replacement unit must carry the H6054 designation specifically, as physically similar sealed beam sizes with different designations may carry different filament configurations or wattage ratings that do not match the original specification.