Freightliner XB Line Brake Bulb Size

The Freightliner XB Line brake utilizes a 198 bulb size for the specific lighting components required for operation. Data for the specified vehicle covers the range from 1995 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 Type	Shop
1995-1997	198	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W.	198	Check Price

Other Locations

Additional Notes

The 198 bulb is the sole brake bulb type listed for the Freightliner XB Line across the 1995-1997 model years.
The 198 bulb follows the ANSI standard, which is the recognized specification framework used in the United States and Canada for automotive lighting components.
It uses a T5 miniature wedge base, a self-retaining form factor that requires no separate socket locking mechanism, relying instead on the wedge-shaped glass envelope to hold the bulb in place.
The 198 operates at 12 volts and draws 2 watts, placing it among the lower-output bulbs in automotive applications, consistent with indicator and auxiliary lighting roles rather than high-intensity functions.