International S1754 front side marker bulbs use 168 or 1895 bulb sizes, while rear side marker bulbs use 168 bulb size according to replacement specifications. The chart covers vehicle production years spanning 1981 to 1989 with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The International S1754 uses two distinct bulb types across its side marker positions: the 168 and the 1895, both of which are ANSI-standardized miniature wedge bulbs rated for 12-volt systems.
The 168 bulb is a T10 wedge type rated at 4.9 watts, making it the more prevalent of the two bulb types across the S1754's side marker positions.
The 1895 bulb is a T5 wedge type rated at 0.9 watts, a notably lower wattage than the 168, reflecting its smaller physical format.
On the International S1754, the front side marker position uses the 168 bulb for model years 1982-1989, while the 1981 model year uses the 1895 bulb in that same position.
The rear side marker position on the S1754 uses the 168 bulb across all listed model years, 1981-1989, without exception.
Because the 168 (T10) and 1895 (T5) are different wedge sizes, they are not interchangeable. Installing a T10 bulb in a T5 socket, or vice versa, is not a compatible substitution.
The 1981 S1754 front side marker is the only position in these specifications that calls for the 1895 bulb, distinguishing it from every other year and position listed.