Mitsubishi Fuso FK headlight bulb sizes include H6054 and H5001 for high beam applications, along with H6054 and H5006 for low beam configurations, with the bulb size specifications varying across production years. The replacement chart covers 1986 through 1998 model years and details the corresponding bulb sizes for each headlight beam type.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H5001 and H5006 are the dominant bulb types across the Mitsubishi Fuso FK's headlight specifications, with H5001 serving the high beam function and H5006 serving the low beam function on 4-headlamp configurations, as well as on all 2-headlamp configurations from 1986-1993.
All three bulb types listed for the Mitsubishi Fuso FK, namely H6054, H5001, and H5006, are ANSI-standardized sealed beam units rated at 12 volts. Because they are sealed beam units, the entire housing is replaced rather than an internal filament or capsule.
The H6054 is a 5x7-inch rectangular sealed beam unit used on 2-headlamp FK configurations from 1994-1998, serving both high and low beam functions within the same unit.
The H5001 is a 4-inch square sealed beam unit. On 4-headlamp FK configurations from 1994-1998, it is designated exclusively for the high beam position, while on all FK years from 1986-1993, it is the sole high beam unit regardless of headlamp count.
The H5006 is a 5.75-inch round sealed beam unit designated for the low beam position on 4-headlamp FK configurations from 1994-1998, and as the sole low beam unit on all FK years from 1986-1993.
The FK's headlamp configuration directly determines which bulb types are required. A 2-headlamp setup uses H6054 units for both high and low beam from 1994-1998, while a 4-headlamp setup splits the function between H5001 for high beam and H5006 for low beam during the same period.
Because the H6054, H5001, and H5006 are physically distinct sealed beam units with different form factors, rectangular, square, and round respectively, they are not interchangeable with one another despite sharing the same 12-volt rating and ANSI standardization.
From 1986-1993, the FK used H5001 for high beam and H5006 for low beam across all configurations, with no headlamp count variants noted for those years.