International 4700 License Plate Bulb Size

The International 4700 license plate light requires a 1157 bulb size for the specific lighting component. Data for the bulb requirements covers the range from 1992 to 1997.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1992-1997	1157

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157

Other Locations

Additional Notes

The 1157 is the sole license plate bulb type listed for the International 4700 across the 1992-1997 model years.
The 1157 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications shared across those markets.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, allowing it to serve two distinct lighting functions at different wattages.
The bulb operates at 12 volts, which is consistent with the standard electrical system voltage found in most commercial vehicles of this type.
The two filaments are rated at 21 watts and 5 watts respectively, with the higher-wattage filament typically associated with braking or turn signal functions and the lower-wattage filament associated with running or position lighting.
The 1157 uses a BAY15d bayonet base, a two-pin offset base design that prevents incorrect installation by ensuring the bulb can only be seated in one orientation, aligning each filament with its corresponding circuit contact.
Because the BAY15d base uses offset pins, it is not interchangeable with single-pin bayonet bases or other multi-pin configurations that do not share the same pin spacing and offset pattern.