The Jeep Grand Wagoneer high and low beam headlight bulbs utilize either 9004 or H6054 size specifications. The replacement chart covers vehicle production spanning 1984 to 1993.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H6054 is a 5x7-inch rectangular sealed beam unit, meaning the lens, reflector, and filament are fused into a single assembly. When the filament fails, the entire unit requires replacement rather than an internal bulb swap.
The Jeep Grand Wagoneer used the H6054 sealed beam for both high and low beam functions across the 1984-1991 model years. This single unit serves dual lighting roles, which is a defining characteristic of sealed beam technology from that era.
The 9004 is a dual-filament halogen bulb rated at 65W for high beam and 45W for low beam, operating on a 12V system with a P29t base. Its two filaments within one capsule allow it to handle both beam functions independently.
For the 1993 Jeep Grand Wagoneer, both the high beam and low beam positions use the 9004 bulb, representing a shift from the sealed beam format to a replaceable halogen capsule design.
The H6054 and 9004 are not interchangeable. The H6054 is a sealed beam unit with no separate base connector, while the 9004 uses a P29t connector and fits into a separate reflector housing. Substituting one for the other requires a housing change.
Both the H6054 and 9004 conform to ANSI standards recognized in the United States and Canada, meaning their output and physical specifications are governed by a defined regulatory framework rather than manufacturer discretion alone.
The H6054 operates on a 12V system but carries no published wattage rating in the specifications, as sealed beam units of this type were produced in standardized configurations with wattage determined by the unit's internal construction.