Mitsubishi Van high beam headlight bulbs use H4651 size while low beam headlight bulbs use H4656 or H4652 size. The replacement chart covers 1987 to 1990 vehicle production years 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, H4652, and H4656 bulb types appear across the headlight specifications for the Mitsubishi Van. All three conform to ANSI standards recognized in the United States and Canada, and all operate at 12 volts.
Each of these three types is a 4x6-inch rectangular sealed beam unit. In a sealed beam design, the lens, reflector, and filament are fused into a single glass assembly, meaning the entire unit is replaced rather than an internal bulb.
The H4651 is specified for the high beam headlight position across all listed model years of the Mitsubishi Van, covering 1987-1990 without variation.
The H4656 is the predominant low beam specification, fitted to the 1987, 1988, and 1990 model years. The 1989 model year uses the H4652 in the low beam position instead.
The H4652 is described as a variant of the H4651. Despite this relationship, the H4652 is designated for the low beam position in 1989, while the H4651 serves exclusively as the high beam unit. The two are not interchangeable between positions.
The H4651 and H4656 share the same physical format and voltage rating, yet they carry distinct ANSI designations. This distinction reflects differences in beam pattern and light output optimized for high beam and low beam functions respectively, and the two types are not substitutes for one another.