International C110 vehicles utilized 194 bulb size for front side marker applications and 97 bulb size for rear side marker positions. The replacement chart covers 1961 to 1962 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 C110 uses two distinct bulb types across its side marker positions: the 194 for the front and the 97 for the rear, covering the 1961-1962 model years under the Light Duty classification.
The 194 is an ANSI-standard miniature wedge bulb of the T10 form factor, rated at 12V and 3.78W. Its wedge base requires no separate socket retainer, as the bulb body itself acts as the locking mechanism.
The 97 is an ANSI-standard single-filament bulb fitted with a BA15s bayonet base, rated at 12V and 13W. The BA15s designation indicates a single-contact bayonet cap with a 15mm base width.
The 97 is noted as a variant of the 1156 bulb. While both share the BA15s bayonet base, the 97 operates at a lower wattage than the standard 1156, which is typically rated at around 26.9W. This wattage difference makes the two bulbs non-interchangeable despite their physical similarity.
Both the 194 and 97 conform to ANSI standards recognized in the United States and Canada, placing them within a standardized North American bulb numbering system.
The 3.78W rating of the 194 reflects its role as a low-intensity marker lamp, consistent with side marker applications that require visibility rather than high luminous output.
The International C110 (1961-1962) specifies these bulb sizes exclusively for the Light Duty trim level, meaning the fitment data applies within that vehicle classification.