Yamaha XC155 SMAX License Plate Bulb Size

The Yamaha XC155 SMAX uses a 168 bulb size for the license plate light assembly. The replacement chart covers vehicle production spanning 2015 to 2019 with corresponding bulb specifications.

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
2015-2019	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The 168 bulb is the license plate bulb size for the Yamaha XC155 SMAX across the 2015-2019 model years.
The 168 bulb follows the ANSI standard, which is the recognized classification system for bulbs in the United States and Canada.
This bulb belongs to the T10 form factor, a miniature wedge-base type that uses a tapered plastic base to secure itself in the socket without a separate metal holder.
The 168 operates at 12 volts, which is consistent with standard 12V motorcycle and scooter electrical systems.
At 4.9 watts, the 168 draws a low amount of power, which is typical for license plate lighting applications where output requirements are minimal.
The T10 wedge base is a widely used form factor, and bulbs carrying the 168 designation are interchangeable with other T10 wedge bulbs sharing the same voltage and wattage rating.
When substituting bulbs, wattage compatibility is a relevant consideration, as a higher-wattage replacement in the same socket can exceed the rated capacity of the original wiring and socket.