The Freightliner FL50 high beam and low beam headlight bulbs both utilize the H6054 size. The replacement chart covers vehicle production spanning 1995 to 2005.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Freightliner FL50 uses the H6054 bulb type for both high beam and low beam headlight positions across all specified model years from 1995-2005.
The H6054 is a sealed beam unit, meaning the lens, reflector, and filament are housed together as a single non-serviceable assembly rather than as a replaceable bulb within a separate housing.
Sealed beam units such as the H6054 operate on a halogen gas fill, which allows the filament to burn at a higher temperature and produce a whiter light output compared to older vacuum-filled sealed beams.
The H6054 is a rectangular sealed beam format, a form factor widely standardized across commercial and medium-duty vehicle applications during the period covered by these specifications.
Because the same H6054 unit serves both the high beam and low beam positions on the FL50, the assembly contains dual filaments within a single sealed housing, with each filament activated independently by the vehicle's beam selector switch.
The consistent use of one bulb type across both lighting positions means a single replacement unit is interchangeable between the high beam and low beam housings on this vehicle.
The H6054 designation follows a standardized sealed beam numbering system, and units carrying this designation from different manufacturers are generally interchangeable at the socket level, provided the physical housing dimensions conform to the sealed beam standard.
Aftermarket H6054 units are available in halogen-upgraded variants that replace older standard sealed beams while retaining full fitment compatibility with the original housing and connector on the FL50.