Cadillac Escalade EXT License Plate Bulb Size

The Cadillac Escalade EXT license plate uses 168 and 194 bulb sizes for the lighting components located at the rear of the vehicle. Data for the specific bulbs covers the range from 2002 through 2013.

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
2007-2013	168
2002-2006	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The 168 and 194 bulbs are both classified as miniature wedge type T10 bulbs operating at 12 volts, making them physically similar in form factor despite their different wattage ratings.
The 168 bulb draws 4.9 watts, while the 194 bulb draws 3.78 watts, a difference that makes the two types electrically non-equivalent even though they share the same T10 wedge base.
Both bulb types carry ANSI standardization recognized in the United States and Canada, meaning they conform to a defined set of electrical and physical parameters within those markets.
The Cadillac Escalade EXT used the 194 bulb for its license plate position across the 2002-2006 model years.
Starting with the 2007 model year, the Escalade EXT transitioned to the 168 bulb for the license plate position, a specification that remained consistent through the 2013 model year.
Because the 168 and 194 share the T10 wedge base, physical fitment across the two specifications is possible, but the wattage difference means substituting one for the other falls outside the manufacturer-specified rating for a given model year.