Dodge D150 Headlight Bulb Size

Additional Notes

• The H6054 is the most widely used headlight unit across the Dodge D150 range, appearing in both high beam and low beam positions for the 1981-1993 model years, as well as the 1982-1984 range. It is a 5x7-inch rectangular sealed beam unit conforming to ANSI standards for the US and Canadian markets and operates at 12V.
• All headlight units specified for the Dodge D150 are sealed beam designs, meaning the entire unit is replaced rather than an internal bulb. This applies to every bulb size listed across all model years in the specifications.
• The H6024 is a 7-inch round sealed beam unit, also ANSI-standardized and rated at 12V. It serves both high and low beam functions on the D150 for the 1977-1978 model years, and remains an option for 1979-1980 vehicles equipped with a two-headlamp configuration.
• The 1985 Dodge D150 requires different headlight units depending on headlamp configuration. Vehicles with two rectangular headlamps use the H6054, while those with two round headlamps use the H6024. These two units are not interchangeable due to their differing physical form factors.
• For 1979-1980 model years, the four-headlamp configuration introduces the 4x6-inch rectangular sealed beam units. The high beam position uses the H4651 in both years, while the low beam position uses the H4651-variant H4652 in 1979 and the H4656 in 1980.
• The H4651, H4652, and H4656 are all 4x6-inch rectangular sealed beam units conforming to ANSI standards and rated at 12V. Although they share the same physical size, they are distinct part numbers and serve specific beam positions, making substitution between them inadvisable without confirming beam function compatibility.
• The H6054 and H6024 units differ in shape, with the H6054 being rectangular and the H6024 being round. Despite both being ANSI-standard 12V sealed beam units, their physical formats are incompatible, and one cannot serve as a direct replacement for the other.
• On the 1985 D150, the headlamp system configuration determines which sealed beam unit is applicable. The rectangular and round headlamp variants each correspond to a distinct ANSI unit, and the fitment is dictated by the physical housing present on the vehicle.