Plymouth Conquest high beam and low beam headlight bulbs both utilize the H6054 size. The replacement chart covers vehicle production spanning 1984 to 1986.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H6054 is the sole bulb type listed across all headlight positions for the Plymouth Conquest, appearing in both high beam and low beam applications for the 1984-1986 model years.
The H6054 is a 5x7-inch rectangular sealed beam unit operating at 12 volts, conforming to ANSI standards recognized in the United States and Canada.
A sealed beam unit integrates the filament, reflector, and lens into a single non-serviceable assembly, meaning the entire unit requires replacement rather than an internal bulb component.
The Plymouth Conquest shares identical H6054 fitment for both the high beam and low beam positions, indicating the vehicle uses a dual-function or separately housed configuration where the same sealed beam type serves each role.
The H6054 designation follows a standardized sizing system, which allows sealed beam units from different manufacturers to be physically interchangeable as long as the ANSI H6054 specification is met.