International S1624 front side marker bulbs use 1895 or 168 bulb sizes, while rear side marker bulbs use 168 size. The replacement chart covers 1980 to 1982 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 International S1624 uses two distinct bulb types across its front and rear side marker positions for the 1980-1982 model years: the 1895 and the 168.
Both the 1895 and 168 are ANSI-standardized miniature wedge bulbs rated at 12 volts, making them compatible with standard 12V automotive electrical systems.
The 168 bulb follows the T10 wedge form factor and draws 4.9 watts, placing it in the higher output range of miniature wedge bulbs used in marker lighting applications.
The 1895 bulb follows the T5 wedge form factor and draws 0.9 watts, making it a notably lower-wattage option compared to the 168.
The T5 and T10 designations refer to the tubular envelope width of each bulb, with T5 being narrower than T10. These two form factors are not interchangeable due to physical size differences in the wedge base and envelope.
On the International S1624, the rear side marker position uses the 168 bulb across all three model years covered (1980-1982), indicating a consistent fitment for that position throughout this production span.
The front side marker position of the 1982 International S1624 uses the 1895 bulb, which differs from the 168 bulb specified for the same position on the 1980-1981 models. This represents a direct fitment incompatibility between the 1982 and earlier model years for that position.
Both the 1895 and 168 bulbs carry ANSI standardization recognized in both the United States and Canada, meaning they conform to a shared North American specification for miniature automotive lighting.