International C112 front side marker bulbs measure 194 in size while rear side marker bulbs measure 97, with each bulb type specified for its corresponding location on the vehicle. The replacement chart covers 1961 to 1962 model production years and details bulb size specifications for side marker applications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The International C112 uses two distinct bulb types across its front and rear side marker positions for the 1961-1962 model years, with each position requiring a specific and non-interchangeable bulb.
The front side marker on the International C112 (1961-1962) takes the 194 bulb, a T10 miniature wedge type rated at 12V and 3.78W under the ANSI standard recognized in both the US and Canada.
The T10 wedge base of the 194 bulb connects by friction fit rather than a twist or bayonet mechanism, which is a defining characteristic of the miniature wedge form factor.
At 3.78W, the 194 is a low-wattage bulb, consistent with its role as a side marker rather than a primary lighting source.
The rear side marker position on the 1961-1962 C112 uses the 97 bulb, a single-filament type with a BA15s bayonet base rated at 12V and 13W.
The BA15s bayonet base features a single locating pin, which distinguishes it from the dual-pin BA15d base and makes pin alignment a relevant factor during installation.
The 97 bulb is noted as a variant of the 1156, meaning the two share a similar base and general construction, though they are not identical and are not listed as interchangeable in these specifications.
The wattage difference between the 194 (3.78W) and the 97 (13W) reflects a significant gap in power draw, with the rear marker drawing roughly three times more current than the front.
Both the 194 and 97 bulbs conform to ANSI standards applicable in the US and Canada, placing them within a standardized classification system that governs base type, voltage, and wattage ratings.
The Light Duty designation applies to all listed entries for both the front and rear side marker positions across the 1961-1962 model years of the C112.