Freightliner FL112 Parking Light Bulb Size

The Freightliner FL112 parking light utilizes bulb size 1157 for illumination across all recorded vehicle applications. Data for the specified component covers the range 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 parking light across all listed model years, spanning 1996-2003.
The 1157 is an ANSI-standardized bulb type recognized across the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications shared by all compliant manufacturers.
The 1157 operates on a dual-filament design, which allows a single bulb to serve two distinct brightness levels within one housing, a common arrangement in combined stop and parking light applications.
The bulb uses a BAY15d bayonet base, a two-pin offset base type where the two pins are positioned at different heights to ensure the bulb can only be seated in one rotational orientation, preventing incorrect filament alignment.
The 1157 is rated at 12 volts, consistent with standard 12V automotive electrical systems.
The two filaments are rated at 21 watts and 5 watts respectively, with the higher-wattage filament typically associated with the stop or turn signal function and the lower-wattage filament associated with the parking or running light function.
Because the 1157 is a dual-filament bulb, single-filament substitutes such as the 1156 are not interchangeable, as the 1156 shares the same BAY15s base style but carries only one filament and uses a single-pin offset configuration.