The International B132 uses a 198 bulb size for both front and rear turn signal applications. The replacement chart covers 1959 to 1960 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 B132, covering both the 1959-1960 model years.
The 198 bulb follows the ANSI standard recognized in the United States and Canada, placing it within a regulated specification framework for miniature automotive lighting.
It is classified as a T5 miniature wedge bulb, a form factor defined by a wedge-shaped base that connects directly into a socket without a separate metal base or pins.
The T5 designation refers to the bulb envelope width, expressed in eighths of an inch, making the T5 envelope five-eighths of an inch wide.
The 198 bulb operates at 12 volts, consistent with the 12-volt electrical systems standard in automotive applications of that era.
At a rated output of 2 watts, the 198 bulb represents a low-power draw, typical of indicator and signal lighting rather than illumination functions.
The Light Duty classification noted in the specifications applies to both the front and rear turn signal positions across the 1959-1960 model years.
The front and rear turn signal positions on the International B132 share an identical bulb specification, meaning the 198 bulb is interchangeable between those two positions on this vehicle.