International S130 utilizes a 194 bulb size for front side marker applications and a 97 bulb size for rear side marker positions. The replacement chart covers 1956 to 1957 model 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 International S130 uses two distinct bulb types across its front and rear side marker positions for the 1956-1957 model years, with each position requiring a specific and non-interchangeable bulb.
The 194 bulb is an ANSI-standardized miniature wedge type in a T10 form factor, rated at 12 volts and 3.78 watts, and serves as the front side marker bulb on the International S130 for both listed model years under the Light Duty classification.
The T10 wedge base of the 194 bulb connects directly to the socket without a separate base component, relying on the tension of the socket contacts against the bulb's glass envelope to maintain the electrical connection.
The rear side marker position on the S130 uses the 97 bulb across the 1956-1957 model years, which operates at 12 volts and draws 13 watts, making it significantly higher in wattage than the front marker bulb.
The 97 bulb uses a BA15s bayonet base, a single-contact design where the bulb locks into the socket with a quarter-turn motion, and is classified as a single-filament type.
The 97 is noted as a variant of the 1156 bulb. Despite this relationship, the two are not directly interchangeable due to differences in their base pin positioning, and substitution without verification of socket compatibility would be incorrect.
Both the 194 and 97 bulbs conform to ANSI standards applicable in the United States and Canada, indicating standardized electrical and physical tolerances within those markets.
The front and rear side marker bulbs on the S130 differ in both base type and wattage, meaning the two positions share no parts interchangeability with each other.