The Hino SG5523 uses an H4651 bulb size for high beam headlight operation and an H4652 bulb size for low beam headlight operation. The replacement chart covers vehicle production years from 1993 to 1995 with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H4651 and H4652 are the two bulb types specified for the Hino SG5523 across the 1993-1995 model years, with H4651 serving the high beam position and H4652 serving the low beam position.
Both the H4651 and H4652 conform to ANSI standards recognized in the United States and Canada, and both take the form of a 4x6-inch rectangular sealed beam unit operating at 12 volts.
A sealed beam unit integrates the filament, reflector, and lens into a single fused assembly, meaning the entire unit must be replaced rather than an individual bulb element within it.
The H4652 is classified as a variant of the H4651. Despite their shared physical format and voltage rating, the two types are position-specific and are not interchangeable between the high beam and low beam housings of the Hino SG5523.