The Dodge W300 high beam headlight uses H6024 or H4651 bulb size, while low beam headlight uses H6024, H4656, or H4652 bulb size. The replacement chart covers 1975 to 1980 vehicle production 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 H6024 is a 7-inch round sealed beam unit operating at 12V and conforming to ANSI standards applicable in both the US and Canada. Because it is a sealed beam design, the entire unit is replaced rather than an internal filament or bulb element.
The H6024 serves as the sole headlight bulb size for the Dodge W300 across the 1975-1978 model years, covering both high beam and low beam functions within a two-headlamp configuration.
For 1979-1980, the Dodge W300 was offered in either a two-headlamp or four-headlamp configuration, and the bulb requirements differ between the two. Two-headlamp vehicles retain the H6024 for both high and low beam positions, while four-headlamp vehicles require separate rectangular sealed beam units for each function.
The H4651 and H4656 are 4x6-inch rectangular sealed beam units operating at 12V under ANSI standards. In a four-headlamp setup, the H4651 handles the high beam position and the H4656 handles the low beam position for the 1980 model year.
The H4652 is a 4x6-inch rectangular sealed beam unit described as a variant of the H4651. It fills the low beam position in the four-headlamp configuration for the 1979 model year, while the H4651 again serves the high beam role.
All four bulb types covered in these specifications are sealed beam units, meaning none accept a replaceable internal bulb. Servicing any of these headlamp positions requires replacing the entire sealed unit.
The rectangular sealed beam types (H4651, H4652, H4656) are not interchangeable with the round H6024, as they differ in both physical form and designated beam function. Substituting one for another would be incompatible with the headlamp housing design of the respective configuration.