Hyundai Elantra Coupe Back Up Light Bulb Size

The Hyundai Elantra Coupe back up light requires a bulb size of 921 for the rear lighting assembly. Data for the specific bulb requirements covers the range from 2013 to 2014.

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	US Type	EU Type	Shop
2013-2014	921	W16W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921	Check Price

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Additional Notes

The 921 bulb is the designated back up light size for the Hyundai Elantra Coupe across the 2013-2014 model years.
The 921 follows the ANSI standard, which is the recognized specification system used in the United States and Canada for automotive lighting components.
This bulb uses a wedge-style base, classified under the T15 designation. The T15 designation refers to a bulb body width of 15 eighths of an inch, and the wedge base design means the bulb is held in place by tension within the socket rather than by a bayonet or screw mechanism.
The 921 operates at 12 volts and draws 16 watts, which is consistent with standard single-filament incandescent reverse light applications in 12-volt automotive electrical systems.