The International A130 uses a 198 bulb size for both front and rear turn signal applications. This replacement chart covers vehicle production spanning 1957 to 1958.
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 A130, covering both the 1957-1958 model years.
The 198 bulb follows the ANSI standard, meaning it conforms to the American National Standards Institute specifications recognized across the United States and Canada.
The T5 designation refers to the bulb's tubular envelope, with the numeric portion indicating a width of 5/8 of an inch.
The 198 bulb uses a miniature wedge base, a baseless design where the glass envelope itself is pinched and inserted directly into a matching socket without a separate metal base.
The 198 bulb operates at 12 volts, consistent with the standard electrical system voltage found in automotive applications of that era.
At 2 watts, the 198 bulb draws a very low current, which is characteristic of indicator and signal lighting rather than illumination-focused applications.
The Light Duty classification listed for both model years indicates these specifications apply to the lighter-weight variant of the International A130 rather than heavier commercial configurations.
The front and rear turn signal positions on the International A130 share an identical bulb specification for both listed model years, meaning the same 198 bulb serves all four turn signal positions on the vehicle.