The International C120 uses a 198 bulb size for both front and rear turn signal applications. 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 198 bulb is the sole bulb type listed across all turn signal positions for the International C120, appearing in both the front and rear turn signal applications for the 1961-1962 model years.
The 198 bulb follows the ANSI standard recognized in the United States and Canada, classifying it as a miniature wedge type with a T5 form factor.
A T5 designation refers to a tubular bulb with a width of 5/8 of an inch, which is characteristic of small-profile wedge base bulbs used in low-wattage automotive applications.
The 198 bulb operates at 12 volts and draws 2 watts, placing it in the low-power range of automotive signal lighting.
All listed applications for the International C120 are designated as Light Duty, a classification that applies uniformly to both model years and both front and rear positions.
The front and rear turn signal positions share an identical bulb specification across the 1961-1962 model years, indicating no distinction in bulb type between these two locations on the vehicle.