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 Size
1995-1997	198

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W.	198

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.