The Hino FD2218 uses an H4651 bulb size for high beam headlight and an H4652 bulb size for low beam headlight applications. The replacement chart covers vehicle production years from 1993 to 1995 with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Hino FD2218 uses the H4651 bulb type for high beam headlights across the 1993-1995 model years.
The H4651 is an ANSI-standardized sealed beam unit measuring 4x6 inches in rectangular form, rated at 12V. Because it is a sealed beam design, the entire unit is replaced rather than an individual filament or capsule.
Low beam headlights on the 1993-1995 Hino FD2218 use the H4652, which shares the same 4x6-inch rectangular sealed beam construction and 12V rating as the H4651.
The H4652 is formally classified as a variant of the H4651 within the ANSI standard. Despite their physical similarities, the two types serve distinct beam functions and are not interchangeable between high and low beam positions.
Both the H4651 and H4652 conform to ANSI standards recognized in the United States and Canada, placing them within a regulated category of sealed beam units with defined optical and electrical characteristics.
The sealed beam construction of both types means the lens, reflector, and filament are fused into a single glass unit. Damage to any one of those elements requires replacement of the whole assembly.