The International S132 uses a 194 bulb size for front side marker applications and a 97 bulb size for rear side marker positions. The replacement chart covers 1953 to 1957 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 S132 uses two distinct bulb types across its side marker positions for the 1953-1957 model years, with the 194 assigned to the front and the 97 assigned to the rear.
The 194 bulb is an ANSI-standardized miniature wedge type in a T10 form factor, rated at 12 volts and 3.78 watts, placing it among the lower-wattage bulbs used in automotive marker applications.
The T10 wedge base of the 194 bulb requires no locking mechanism for retention, as the wedge shape itself holds the bulb within the socket.
The 97 bulb used in the rear side marker positions of the International S132 (1953-1957) is a single-filament type with a BA15s bayonet base, rated at 12 volts and 13 watts.
The BA15s designation indicates a single-contact bayonet base with a 15mm collar, which is a non-indexing base type, meaning the bulb can be inserted in any rotational orientation.
The 97 bulb is classified as a variant of the 1156, though the two are not interchangeable without verification, as variants within that family can differ in wattage and base pin positioning.
The wattage difference between the 194 (3.78W) and the 97 (13W) reflects their respective roles, with the higher-wattage 97 providing greater luminous output suited to rear visibility requirements.
Both the 194 and 97 bulbs carry ANSI standardization recognized in both the United States and Canada, indicating conformance to a defined set of electrical and physical tolerances.
The Light Duty classification applied to all listed entries for the 1953-1957 International S132 indicates these specifications correspond to the lighter-weight vehicle configuration within the S132 lineup.