Mitsubishi Fuso FH headlight bulb sizes include H6054 and H5001 for high beam applications, with H6054 and H5006 specifications for low beam configurations. The replacement chart covers 1988 to 1998 production years 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 Mitsubishi Fuso FH uses three sealed beam bulb types across its headlight specifications: H6054, H5001, and H5006. All three conform to ANSI standards recognized in the United States and Canada and operate on 12V electrical systems.
All three bulb types are sealed beam units, meaning the lens, reflector, and filament are fused into a single assembly. When a filament fails, the entire unit is replaced rather than an internal bulb component.
The H6054 is a 5x7-inch rectangular sealed beam unit. It serves both high beam and low beam functions on the 2-headlamp configuration of the Mitsubishi Fuso FH for model years 1994-1998, making it a dual-function unit within that setup.
The H5001 is a 4-inch square sealed beam unit designated for high beam duty. It appears in the 4-headlamp configuration for 1994-1998 and as the sole high beam unit for 1988-1993, covering the full span of the listed specifications for that function.
The H5006 is a 5.75-inch round sealed beam unit assigned exclusively to low beam operation. It serves the 4-headlamp configuration for 1994-1998 and functions as the only low beam unit for 1988-1993.
The headlamp configuration of the vehicle directly determines which bulb types are required. The 2-headlamp setup relies solely on the H6054 for both beams, while the 4-headlamp setup splits the function between the H5001 for high beam and the H5006 for low beam. These two configurations are not interchangeable in their bulb requirements.
The H5001 and H5006 share the same 4-inch square and 5.75-inch round form factors respectively, which are distinct from the rectangular H6054. Because sealed beam units are shape-specific and mount to fixed housings, substituting one type for another is not supported by the specifications.