Dodge D100 high beam and low beam headlight bulbs utilize H6054, H6024, and H4651 or H4652 bulb sizes depending on configuration. A replacement chart covering 1975 to 1989 model years documents the specific bulb size specifications for this vehicle.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Dodge D100 headlight specifications across model years 1975-1989 reference four sealed beam unit types: H6054, H6024, H4651, and H4652. All four conform to ANSI standards recognized in both the United States and Canada and operate on 12V electrical systems.
The H6054 is a 5x7-inch rectangular sealed beam unit and is the most frequently specified type across the D100 lineup, appearing in both high beam and low beam positions for the 1984 and 1986-1989 model years, as well as for 1985 vehicles equipped with two rectangular headlamps.
The H6024 is a 7-inch round sealed beam unit and serves as the second most common type in these specifications, covering high beam and low beam positions for model years 1975-1978, the 1979 two-headlamp configuration, and the 1985 two-round-headlamp configuration.
All sealed beam units listed, including the H6054, H6024, H4651, and H4652, are not serviceable at the bulb level. When a unit fails, the entire sealed assembly requires replacement rather than an internal bulb.
The 1979 Dodge D100 with a four-headlamp configuration uses two distinct sealed beam types depending on beam function: the H4651 for the high beam position and the H4652 for the low beam position. Both are 4x6-inch rectangular units, with the H4652 classified as a variant of the H4651.
The 1985 model year is the only year in these specifications where two different sealed beam types are listed simultaneously, with fitment determined by headlamp configuration. Vehicles with two rectangular headlamps use the H6054, while those with two round headlamps use the H6024.
The H4651 and H4652 sealed beam units, both 4x6-inch rectangular types, appear exclusively in the 1979 four-headlamp configuration and are not referenced for any other model year in the Dodge D100 specifications provided.
Because the H6054 and H6024 units serve dual roles covering both high beam and low beam positions in most applicable years, a single sealed beam type handles the full headlighting function rather than separate units for each beam mode.