Acura TSX License Plate Bulb Size

The Acura TSX license plate light requires a 168 bulb size for proper illumination of the rear registration area. Data for the specified bulb covers the period from 2004 to 2010.

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
2004-2010	168

Bulb Specifications

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

Other Locations

Additional Notes

The Acura TSX uses the 168 bulb for the license plate position across all listed model years, spanning 2004-2010.
The 168 is classified as a T10 miniature wedge bulb, a form factor defined by a wedge-shaped base that seats directly into a socket without a separate metal cap or pins.
The bulb operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of license plate and courtesy lighting applications.
The 168 designation follows ANSI standardization, meaning the bulb conforms to a specification recognized across both the United States and Canada.
The T10 wedge base is a widely produced format, and the 168 shares physical compatibility with several other bulb numbers in the same family, such as the 194 and 147, though those alternatives carry different wattage ratings that may affect socket load.