Freightliner MB Line Brake Bulb Size

The Freightliner MB Line brake light utilizes a 198 bulb size for the specific lighting component located at the rear of the vehicle. Data for the bulb specifications 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 (Cab Over Engine)	Check Price

Bulb Specifications

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

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Additional Notes

The Freightliner MB Line uses the 198 bulb for its brake light application across the 1995-1997 model years, specifically in the Cab Over Engine configuration.
The 198 bulb follows the ANSI standard recognized in both the United States and Canada, classifying it as a regulated miniature wedge type within North American automotive lighting systems.
This bulb belongs to the T5 wedge family, a form factor defined by a tubular glass envelope approximately 5/8 of an inch wide, with a wedge-shaped base that seats directly into a socket without requiring a separate metal base or locking pins.
The 198 operates at 12 volts and draws 2 watts, placing it among the lower-output bulbs in automotive use, which is consistent with indicator or supplementary signal lighting rather than primary high-intensity brake lamps.
The wedge base design of the T5 means the bulb is held in place by tension from the socket contacts alone, making it a tool-free replacement in most applications.
Because the 198 is an ANSI-designated bulb, it conforms to standardized electrical and physical parameters, meaning equivalent bulbs from different manufacturers sharing the 198 designation are generally interchangeable within the same socket type.