International S2375 front and rear side marker bulbs both require 168 size bulbs for proper operation. The replacement chart covers 1984 to 1988 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 168 bulb is the sole bulb type specified for the International S2375 across all listed side marker positions and model years.
The 168 bulb follows the ANSI standard recognized in both the United States and Canada, classifying it as a regulated miniature lamp type.
It is a T10 miniature wedge bulb, meaning it uses a wedge-style base rather than a bayonet or screw fitting, and seats directly into a compatible wedge socket without a separate metal base.
The 168 operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of marker and clearance lighting applications.
The International S2375 uses the 168 bulb for both front and rear side marker positions across the 1984-1988 model years covered in the specifications.
Because the same bulb type is shared between the front and rear side marker positions, a single 168 bulb serves as a direct fitment for either location on this vehicle.