The Mazda Navajo high beam and low beam headlight bulbs both utilize a 9004 size. The replacement chart covers vehicle production spanning 1991 to 1994.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mazda Navajo uses the 9004 bulb across all documented model years, spanning 1991-1994, for both high beam and low beam headlight positions.
The 9004 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments to serve both the high beam and low beam functions within one housing.
Because the 9004 handles both beam functions in the Mazda Navajo, the high beam and low beam positions share the same bulb specification rather than requiring separate bulb types for each role.
The 9004 operates at 12 volts and carries a wattage rating of 65W for the high beam filament and 45W for the low beam filament, reflecting the higher luminous output expected from the high beam setting.
The 9004 uses a P29t base, which is a specific connector and socket type. Bulbs with differing base types are not physically interchangeable with this socket, regardless of voltage or wattage similarity.
The 9004 conforms to ANSI standards applicable in the United States and Canada, indicating the bulb meets regulated performance and safety criteria established for those markets.
The 9004 and 9007 bulbs are sometimes confused due to their similar dual-filament design, but they differ in base configuration and filament polarity, making them non-interchangeable despite outward resemblance.