International L111 vehicles utilized 194 bulb size for front side marker applications and 97 bulb size for rear side marker positions. The replacement chart documents bulb specifications across 1950 to 1952 production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The International L111 uses the 194 bulb for the front side marker position across the 1950-1952 model years, and the 97 bulb for the rear side marker position across the same span.
The 194 is an ANSI-standardized miniature wedge bulb of the T10 type, rated at 12 volts and 3.78 watts. The T10 designation refers to a tubular envelope roughly 10/8 of an inch wide, with a wedge-style base that seats directly into a socket without a separate metal base.
The 97 is an ANSI-standardized single-filament bulb rated at 12 volts and 13 watts, drawing significantly more power than the 194 used at the front position.
The 97 uses a BA15s bayonet base, which is a single-contact bayonet mount. The "s" in BA15s denotes a single contact at the base, distinguishing it from dual-contact bayonet variants.
The 97 is noted as a variant of the 1156 bulb. While the two share the BA15s base type, they are not identical in all electrical characteristics, and substitution between them warrants attention to wattage and voltage ratings before installation.
The 194 and 97 bulbs serve distinct positions on the International L111 and are not interchangeable with each other, as they differ in base type, wattage, and physical form factor.
Both the 194 and 97 carry ANSI standardization applicable to the United States and Canada, meaning their specifications conform to a defined industry standard rather than being proprietary to a single manufacturer.