The Ford EXP high beam and low beam headlight bulbs use 9004 or H6054 size bulbs. The replacement chart covers vehicle production spanning 1982 to 1988.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford EXP used two distinct headlight technologies across its production run, with the 1982-1985 models fitted with the H6054 sealed beam unit and the 1986-1988 models using the 9004 halogen bulb.
The H6054 is a 5x7-inch rectangular sealed beam unit operating at 12V. Because the light source is fused within the lens and reflector assembly, the entire unit requires replacement rather than just an internal bulb.
The 9004 is a dual-filament halogen bulb operating at 12V with a rated output of 65W on high beam and 45W on low beam. It uses a P29t base and conforms to the ANSI standard applicable in the US and Canada.
Both the H6054 and the 9004 serve the high beam and low beam functions within a single unit. In the case of the 9004, both functions are handled by its two filaments, while the H6054 achieves this through its sealed beam construction.
The Ford EXP (1986-1988) relies on the 9004 bulb for both high and low beam output from one socket, meaning a single filament failure affects only one beam mode while the other remains operational.
The H6054 and 9004 are not interchangeable. The H6054 is a sealed glass assembly, while the 9004 is a replaceable capsule-style halogen bulb seated in a separate housing, representing a fundamentally different fitment type.