Ford Expedition Headlight Bulb Size

Additional Notes

• The Ford Expedition uses six distinct bulb types across its headlight specifications: 9005, 9006, 9007, 9008, H9, and H11. The 9005, 9006, 9007, and 9008 types follow the ANSI standard used in the United States and Canada, while the H9 and H11 types follow the ECE standard used in Europe and worldwide, though both H9 and H11 carry US approval as well.
• The 9008 bulb is a dual-filament halogen type rated at 12V with a 65W high beam filament and a 55W low beam filament, using a P26t base. Its dual-filament design means a single bulb serves both the high and low beam functions, which is reflected in the specifications for the Ford Expedition (2007-2014), where the same 9008 size is listed for both the high beam and low beam positions.
• The 9007 bulb shares the dual-filament halogen design of the 9008, also rated at 12V, 65W/55W, but uses a PX29t base rather than a P26t base, making the two types physically incompatible despite their similar electrical ratings. The 9007 is specified for both the high and low beam positions on the Expedition for model years 1997-2002.
• The 9005 and H9 bulbs are both single-filament halogen types rated at 12V and 65W, placing them in the same power class. However, they use different bases, with the 9005 using a P20d base and the H9 using a PGJ19-5 base, meaning they are not physically interchangeable despite their identical wattage.
• For the 2015-2018 Ford Expedition, headlight bulb fitment depends on which headlamp assembly is installed. Vehicles equipped with projector-type headlamps use H9 for the high beam and 9005 for the low beam, while those without projector-type headlamps use 9005 for the high beam and H11 for the low beam. Substituting bulbs without confirming the headlamp type would result in an incorrect fitment.
• The H11 is a single-filament halogen bulb rated at 12V and 55W with a PGJ19-2 base. Its 55W rating places it in a lower power class than the 65W 9005 and H9 types, and its PGJ19-2 base is distinct from the bases used by all other bulb types in these specifications, making cross-substitution physically impossible without modification.
• The 9006 is a single-filament halogen bulb rated at 12V and 55W with a P22d base, specified exclusively for the low beam position on the 2003-2006 Expedition. During those same years, the high beam position uses the 9005, which shares the same 65W rating but carries a P20d base, distinguishing the two as separate, non-interchangeable types despite their similar construction.
• A base type change occurs between the 2006 and 2007 model years on the Ford Expedition. The separate 9005 high beam and 9006 low beam arrangement used through 2006 gives way to the single dual-filament 9008 bulb from 2007 onward through 2014, representing a shift from a two-bulb headlamp system to a one-bulb system per housing side.