Dodge Seneca headlight bulbs utilize H5001 size for high beam and H5006 size for low beam applications. The replacement chart covers 1960 to 1961 vehicle production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Dodge Seneca uses two distinct sealed beam units across its headlight system: the H5001 for high beam and the H5006 for low beam, both conforming to ANSI standards recognized in the United States and Canada.
The H5001 is a 4-inch square sealed beam unit operating at 12 volts. As a sealed beam design, the lens, reflector, and filament are fused into a single housing, meaning the entire unit is replaced rather than an internal bulb.
The H5006 is a 5.75-inch round sealed beam unit, also rated at 12 volts and sharing the same sealed beam construction as the H5001, requiring full unit replacement when the filament fails.
The square profile of the H5001 and the round profile of the H5006 make the two units physically incompatible with each other's housings, so the high beam and low beam positions on the Dodge Seneca (1960-1961) are not interchangeable.
Both the H5001 and H5006 carry ANSI standardization, which means units from different manufacturers conforming to the same ANSI designation share identical form, fit, and electrical characteristics.
The 12-volt rating on both sealed beam types corresponds to the 12-volt electrical systems that became standard in American passenger vehicles during this period, replacing earlier 6-volt systems.
The H5001 and H5006 specifications remain consistent across both the 1960-1961 model years of the Dodge Seneca, indicating no headlight system changes were made between those two years.