Freightliner MB Line front and rear turn signal bulbs utilize a 198 size. The replacement chart covers 1995 through 1997 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 198 bulb is the sole turn signal bulb size listed for the Freightliner MB Line across both front and rear positions for the 1995-1997 model years, all under the Cab Over Engine configuration.
The 198 bulb conforms to the ANSI standard recognized in the United States and Canada, meaning it meets a defined set of electrical and physical performance criteria established by that standards body.
It is classified as a miniature wedge bulb in the T5 form factor. The T5 designation refers to a tubular glass envelope with a width of five-eighths of an inch, and the wedge base type means the bulb is held in its socket by the pinched glass base itself rather than by metal pins or a bayonet fitting.
The 198 bulb operates at 12 volts and draws 2 watts, placing it at the low end of the power consumption range for automotive signal lighting.
Because the same bulb size, 198, is specified for both the front and rear turn signal positions across all three listed model years, a single bulb type serves all four turn signal locations on the vehicle.