The Ford F-550 Super Duty high beam and low beam headlight bulbs utilize 9008, H6054, or 9007 size specifications depending on model configuration. The replacement chart covers vehicle production years spanning 1999 through 2022 with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9008 bulb is a dual-filament halogen type operating at 12V with a 65W high beam filament and a 55W low beam filament, housed in a single unit with a P26t base. Its dual-filament design allows it to serve both high and low beam functions from one bulb, which is why the Ford F-550 Super Duty shares the same 9008 part number across both the high beam and low beam positions for the years it applies.
The 9007 bulb shares the same 12V, 65W/55W dual-filament configuration as the 9008 but uses a PX29t base rather than a P26t base. These two base types are physically incompatible, meaning a 9007 and a 9008 cannot be substituted for one another despite their otherwise identical wattage ratings.
The Ford F-550 Super Duty used the 9007 bulb for halogen capsule headlamp fitments in the 1999-2004 model years, after which the specification shifted to the 9008 for 2005 onward in the same headlamp configuration.
The H6054 is a 5x7-inch rectangular sealed beam unit rather than a replaceable capsule bulb. The entire assembly is replaced as a single component, and it operates at 12V. It handles both high and low beam output within the one sealed unit.
For the 1999-2010 model years, the Ford F-550 Super Duty carried two distinct headlamp system options: halogen capsule headlamps and sealed beam headlamps. Each system requires a different bulb or unit, and the two types are not interchangeable with one another.
From 2011 onward, the specifications list only the 9008 with no sealed beam alternative, indicating that the H6054 sealed beam option was no longer offered after the 2010 model year.
All three bulb types listed in the specifications, the 9008, 9007, and H6054, conform to ANSI standards applicable in both the United States and Canada.
The 2017-2019 model years are noted specifically as requiring the 9008 with halogen capsule headlamps, while the 2021-2022 entries carry no such conditional notation, reflecting a difference in how the fitment condition is recorded across those respective model years.