International B102 vehicles utilized 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 turn signal bulb type listed for the International B102, appearing in both front and rear turn signal positions for the 1959-1960 model years.
The 198 bulb follows the ANSI standard, meaning it conforms to a recognized North American specification used across the United States and Canada.
The 198 bulb is a miniature wedge type, classified under the T5 designation, which refers to a tubular bulb with a width of 5/8 of an inch.
A wedge base bulb relies on the tension of its glass envelope being pressed directly into the socket, rather than using a separate metal base with pins or a bayonet fitting.
The 198 bulb operates at 12 volts, consistent with the standard electrical system voltage found in most conventional automotive applications of that era.
At 2 watts, the 198 bulb draws a very low amount of power, placing it among the lower end of automotive bulb wattage ratings.
The Light Duty classification is noted for both the front and rear turn signal positions across the 1959-1960 model years of the International B102.
The 198 bulb is uniform across all four listed turn signal positions on the International B102, indicating no distinction in bulb type between the front and rear applications for either model year.