Toyota Tundra License Plate Bulb Size

Additional Notes

• The Toyota Tundra uses the 168 bulb size for the license plate position across all model years listed in the specifications, spanning 2000-2021.
• The 168 bulb is classified as a T10 miniature wedge type, which refers to its wedge-shaped base that holds the bulb in place without a separate metal socket or locking mechanism.
• This bulb operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of illumination bulbs rather than signaling bulbs.
• The 168 designation follows ANSI standards recognized in both the United States and Canada, meaning the specification applies uniformly across North American markets.
• The T10 wedge form factor is shared by several bulb types in the same family, including the 194 and 2825, though these carry different wattage ratings and are not direct substitutes for the 168 without verifying electrical compatibility.
• Because the 168 and 194 bulbs share the same T10 wedge base, they are physically interchangeable in many sockets, but the 194 draws 3.78 watts compared to the 168's 4.9 watts, which produces a difference in light output.
• The wedge base construction of the T10 means the filament leads are embedded directly into the glass envelope, making the base itself the electrical contact point when seated in the socket.
• The specifications show no variation in bulb size across the listed model years for the Toyota Tundra, indicating the same socket type was retained throughout the covered production period.