Ford Probe headlight bulbs utilize H4666 and H6054 sizes for both high and low beam applications, with the bulb specifications detailed across multiple configurations. The replacement chart covers vehicle production spanning 1989 to 1997, documenting bulb size requirements throughout this range of years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford Probe uses two distinct sealed beam headlight types across its production run: the H4666 for 1993-1997 models and the H6054 for 1989-1992 models.
Both the H4666 and H6054 are ANSI-standardized sealed beam units recognized in the US and Canadian markets, operating at 12 volts.
A sealed beam unit integrates the filament, reflector, and lens into a single housing, meaning the entire assembly is replaced rather than an internal bulb.
The H6054 is a 5x7-inch rectangular sealed beam, a format shared with many other vehicles of its era, which can affect cross-vehicle parts availability.
On the Ford Probe, the same bulb type serves both the high beam and low beam functions for any given model year, indicating a dual-filament sealed beam configuration rather than separate housings for each function.
The H4666 and H6054 are not interchangeable with each other, as they differ in physical size and connector configuration despite both being rectangular sealed beam units.