International 9900i Dome Light Bulb Size

The International 9900i dome light requires a bulb size of 1142 for proper illumination within the interior cabin area. Data for the specified component covers the range from 2011 through 2017.

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
2013-2017	1142
2011	1142

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1142

Other Locations

Additional Notes

The 1142 bulb is the sole dome light bulb type listed for the International 9900i across the 2011-2017 model years covered in these specifications.
The 1142 is an ANSI-standardized bulb type, meaning its physical and electrical characteristics conform to a defined North American standard recognized in both the United States and Canada.
The 1142 operates on a 12-volt electrical system, which is consistent with standard automotive and commercial truck low-voltage DC architecture.
The 1142 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, rated at 21 watts and 5 watts respectively.
The 1142 uses a BAY15d bayonet base, a two-pin base type in which the two pins are offset at different heights to enforce correct orientation during installation.
The 1142 is described as a variant of the 1157 bulb. These two types share the BAY15d base and dual-filament design, but the 1142 carries different wattage ratings, which means the two are not directly interchangeable despite their physical similarities.