The Mazda B2600 high beam and low beam headlight bulbs both utilize the H6054 bulb size. The replacement chart covers vehicle production spanning 1987 to 1993.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mazda B2600 uses the H6054 bulb size for both high beam and low beam headlights across all available model years, spanning 1987-1993.
The H6054 is an ANSI-standardized sealed beam unit recognized across the United States and Canada, meaning its physical and electrical specifications conform to a defined national standard rather than a proprietary manufacturer format.
The H6054 takes the form of a 5x7-inch rectangular sealed beam unit, in which the lens, reflector, and filament are fused into a single glass assembly.
Because the H6054 is a sealed beam unit, the entire assembly is replaced when the light fails, as the filament is not accessible or separately serviceable.
The H6054 operates at 12 volts, which is consistent with the standard electrical system voltage found in passenger and light commercial vehicles.
The same H6054 unit serves both the high beam and low beam functions on the Mazda B2600, indicating the vehicle relies on a dual-filament sealed beam design rather than separate housings for each beam type.
The ANSI standardization of the H6054 means that any compliant H6054 unit from different manufacturers is generally interchangeable, provided it meets the same 5x7-inch rectangular sealed beam format and 12V rating.