The Dodge D350 headlight bulb uses H6054 and H6024 sizes for both high and low beam applications. The replacement chart covers 1981 to 1993 model years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H6054 is the dominant headlight unit across the Dodge D350 specification range, appearing in both high beam and low beam positions for the 1981-1993 model years, with one exception in 1985.
The H6054 is an ANSI-standard 5x7-inch rectangular sealed beam unit rated at 12V. It is a sealed beam design, meaning the entire unit is replaced rather than an internal bulb.
The H6024 is an ANSI-standard 7-inch round sealed beam unit, also rated at 12V and also replaced as a complete unit. It shares the same sealed beam construction as the H6054 but differs in shape and size.
The 1985 Dodge D350 presents a split fitment: vehicles equipped with two rectangular headlamps use the H6054, while those equipped with two round headlamps use the H6024. Both the high beam and low beam positions follow this same split for that year.
Because the H6054 and H6024 differ in physical form, one unit is not a substitute for the other. The headlamp housing configuration on the vehicle determines which sealed beam unit is applicable.
Both the H6054 and H6024 carry ANSI standardization recognized in the United States and Canada, meaning units from different manufacturers conforming to the same ANSI designation share identical specifications and are interchangeable within that designation.
The sealed beam construction of both units means the lens, reflector, and filament are fused into a single assembly. Damage to any one of those elements requires replacement of the entire unit.
For all model years outside of 1985, the D350 uses a single headlight unit type for both high beam and low beam positions, with the H6054 serving both functions through a dual-filament design within the sealed beam assembly.