Freightliner FL60 Tail Light Bulb Size

The Freightliner FL60 tail light requires a 1157 bulb size for the specific lighting component located at the rear of the vehicle. Available data covers the range from 1991 through 2004 for the specified automotive application.

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
1991-2004	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 FL60 uses the 1157 bulb for its tail lights across all listed model years, spanning 1991-2004.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single glass envelope, one rated at 21W and the other at 5W, allowing it to serve both stop/turn and running light functions simultaneously.
The 1157 operates on a 12V electrical system, which is consistent with standard automotive and medium-duty vehicle electrical architecture.
The bulb uses a BAY15d bayonet base, a two-pin offset base design that prevents incorrect insertion by positioning the two pins at different heights, ensuring polarity-correct installation.
The 1157 conforms to ANSI standards recognized in both the United States and Canada, placing it within a widely distributed and regulated specification category.
Because the BAY15d base uses offset pins, it is not interchangeable with single-filament bayonet bulbs that share a similar physical profile but differ in pin configuration, such as the 1156, which uses a BA15s single-contact base.