Freightliner FL112 Tail Light Bulb Size

The Freightliner FL112 tail light utilizes a 1157 bulb size for the rear lighting assembly. Available data for the specified vehicle covers the period from 1996 through 2003.

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
1996-2003	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 Freightliner FL112 uses the 1157 bulb for its tail lights across all listed model years, spanning 1996-2003.
The 1157 is a dual-filament bulb, meaning it serves two lighting functions within a single unit, typically stop and tail operation, using 21W and 5W filaments respectively.
The 1157 operates on a 12V electrical system, which is standard for automotive lighting circuits.
The 1157 uses a BAY15d bayonet base, a two-pin offset base design that prevents incorrect insertion by ensuring only one rotational orientation allows the bulb to seat properly.
The 1157 conforms to ANSI standards and carries approval for use in both the United States and Canada.
Because the 1157 is a dual-filament type, substituting it with a single-filament bulb of similar wattage would result in the loss of one lighting function, making filament count a critical factor in replacement selection.