Ford F-350 Super Duty Headlight Bulb Size

Additional Notes

• The 9008 bulb is the most frequently specified type across the Ford F-350 Super Duty headlight data, appearing in both high beam and low beam positions across a wide span of model years. It is a dual-filament halogen bulb operating at 12V with a 65W high beam filament and a 55W low beam filament, fitted with a P26t base, and it meets the ANSI standard used in the United States and Canada.
• Because the 9008 carries both high and low beam filaments within a single unit, it serves both functions simultaneously in housings designed for it, which explains its presence in both the high beam and low beam sub-parts of the specifications for the same model years.
• The 9007 bulb was specified for the Ford F-350 Super Duty with halogen capsule headlamps during the 1999-2004 model years. Like the 9008, it is a dual-filament halogen bulb rated at 12V, 65W/55W, but it uses a PX29t base rather than the P26t base of the 9008, making the two types physically non-interchangeable despite their similar electrical ratings.
• The H6054 is a 5x7-inch rectangular sealed beam unit rather than a replaceable capsule bulb. It is rated at 12V and meets the ANSI standard. When this unit fails, the entire assembly is replaced rather than an internal bulb, which represents a fundamentally different service procedure compared to the halogen capsule alternatives listed for the same model years.
• The 9005 is a single-filament halogen bulb with a P20d base, rated at 12V and 65W, and it appears only in the high beam position. Its single-filament design means it handles only one lighting function, unlike the dual-filament 9008 or 9007 types.
• The H7 bulb follows the ECE standard rather than the ANSI standard and carries approval for use in the United States and Japan as well. It is a single-filament halogen bulb with a PX26d base, rated at 12V and 55W, and it appears only in the low beam position within these specifications.
• For the 2019-2020 model years, the Ford F-350 Super Duty with the Left Hand Asymmetry configuration uses the 9005 for the high beam and the H7 for the low beam, while the Halogen Capsule Headlamp configuration for those same years uses the 9008 for both functions. These two configurations are not interchangeable, as they involve different bulb types, base designs, and filament counts.
• The 2005-2010 model years presented two distinct headlamp system types simultaneously: sealed beam units requiring the H6054 and halogen capsule units requiring the 9008. Substituting one bulb type for the other is not possible, as the sealed beam H6054 is a self-contained unit with no equivalent capsule replacement.