Ford F-250 Super Duty Headlight Bulb Size

Additional Notes

• The 9008 bulb is the most widely specified type across the Ford F-250 Super Duty headlight data. It is a dual-filament halogen unit rated at 12V with a 65W high beam filament and a 55W low beam filament, using a P26t base. Because both filaments occupy a single housing, the 9008 serves both high and low beam functions simultaneously, which is why it appears under both sub-parts for the same model years.
• The 9007 bulb shares the same dual-filament, single-housing design as the 9008 and carries identical 65W/55W ratings at 12V, but it uses a PX29t base rather than the P26t base found on the 9008. These two base types are physically incompatible, so the 9007 and 9008 are not interchangeable despite their similar electrical characteristics.
• The H6054 is a 5x7-inch rectangular sealed beam unit operating at 12V. Unlike the halogen capsule types, it is not a replaceable bulb within a housing; the entire unit is removed and replaced as one assembly. It was specified for the Ford F-250 Super Duty from 1999-2010 on vehicles equipped with sealed beam headlamps.
• The Ford F-250 Super Duty carried two distinct headlamp system options from 1999-2010, requiring either the H6054 sealed beam unit or the 9008 halogen capsule bulb depending on which system was installed. From 2005-2010, the halogen capsule option used the 9008, while the 1999-2004 halogen capsule option used the 9007 instead.
• The H7 bulb follows the ECE standard rather than the ANSI standard used by the 9005, 9008, and 9007 types. It is a single-filament halogen unit rated at 12V and 55W with a PX26d base. Its appearance in the 2017-2020 low beam and high beam data, specifically under the Left Hand Asymmetry condition for 2019-2020, reflects a headlamp optical design associated with markets outside North America.
• For the 2017-2020 Ford F-250 Super Duty, the high beam and low beam bulb types diverge depending on the headlamp configuration. Vehicles with Halogen Capsule Headlamps use the 9008 for both functions, while those with the Left Hand Asymmetry or standard non-capsule configuration use the 9005 for high beam and the H7 for low beam. These are separate single-filament bulbs rather than a combined dual-filament unit.
• The 9005 is a single-filament halogen bulb rated at 12V and 65W with a P20d base. Because it handles only one beam function, it is used alongside a separate low beam bulb in configurations where the 9008 dual-filament unit is not specified. Its P20d base is distinct from the bases of the 9007, 9008, and H7, making cross-substitution physically impractical without modification.
• From 2021-2023, the Ford F-250 Super Duty specifies the 9008 for both high and low beam positions without any conditional variants, indicating a single headlamp system across the production run for those years.