Dodge D50 Headlight Bulb Size

Additional Notes

• The H6054 is a 5x7-inch rectangular sealed beam unit operating at 12V and conforming to ANSI standards applicable in both the United States and Canada. It functions as both the high beam and low beam headlight on the Dodge D50 for the 1981-1982 model years, meaning a single bulb type serves both lighting functions on those vehicles.
• The H6024 is a 7-inch round sealed beam unit, also rated at 12V and built to the same ANSI standard. It appears across the 1979 and 1980 model years of the D50, specifically on 1980 configurations equipped with a two-headlamp system, where it covers both high and low beam positions.
• The 1980 model year is the only year in these specifications where two distinct headlamp system configurations are documented. Vehicles with two headlamps use the H6024, while those with four headlamps use separate units for high and low beam functions.
• On 1980 four-headlamp D50 configurations, the high beam position uses the H4651 and the low beam position uses the H4652. Both are 4x6-inch rectangular sealed beam units rated at 12V, with the H4652 classified as a variant of the H4651. The two are not interchangeable despite their physical similarity, as each is designated for a specific beam function.
• All four bulb types covered in these specifications are sealed beam units, meaning the lens, reflector, and filament are fused into a single assembly. When a filament fails, the entire unit requires replacement rather than an internal bulb swap.
• The H4651 and H4652 share the same 4x6-inch rectangular form factor but carry distinct ANSI designations. Substituting one for the other would place a beam-specific unit in the wrong headlamp position, which is inconsistent with their respective specifications.