The Freightliner MB Line front side marker bulb size measures 193 or 1893, while the rear side marker bulb size measures 1893. The replacement chart covers vehicle production years spanning 1995 to 1997.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Freightliner MB Line Cab Over Engine configuration uses two distinct bulb types across its side marker positions: the 193 and the 1893, both of which conform to ANSI standards recognized in the United States and Canada.
The 193 bulb is a T10 miniature wedge type rated at 12 volts and 3.78 watts, while the 1893 is a T5 miniature wedge type rated at 12 volts and 2 watts. The T10 and T5 designations refer to the width of the bulb envelope in units of one-eighth of an inch, making the T10 physically larger than the T5.
Because both bulb types share a wedge base design but differ in physical size and wattage, the 193 and 1893 are not interchangeable with one another despite their similar appearance as miniature wedge bulbs.
On the Freightliner MB Line (Cab Over Engine), the front side marker position for 1996-1997 uses the 193 bulb, whereas the 1995 model year front side marker uses the smaller 1893 bulb.
The rear side marker position uses the 1893 bulb consistently across all three model years covered, spanning 1995-1997.
The wattage difference between the two bulb types is notable: the 193 draws 3.78 watts compared to the 1893 at 2 watts, meaning the front side markers on 1996-1997 vehicles produce a higher light output than those on the 1995 model year.
The front side marker bulb specification changed between the 1995 and 1996 model years on the Freightliner MB Line Cab Over Engine, shifting from the lower-wattage 1893 to the higher-wattage 193.