Hyundai Tiburon Back Up Light Bulb Size

The Hyundai Tiburon back up light utilizes 921, P21W, and 1156 bulb sizes depending on the specific version of the vehicle. Available data for the lighting components covers the range from 1997 through 2008.

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
2007-2008	921
2003-2006	1156
1997-2001	1156

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156

Other Locations

Additional Notes

The Hyundai Tiburon backup light specifications cover model years 1997-2008 and reference two distinct bulb types: the 921 and the 1156, both conforming to ANSI standards applicable in the US and Canada.
The 1156 is a single-filament bulb with a BA15s bayonet base, rated at 12V and 21W. The bayonet base uses a twist-lock mounting style, which is a common fitment method in automotive lighting applications.
The 921 is a wedge-type bulb in the T15 form factor, rated at 12V and 16W. Wedge bulbs rely on the tension of their wire leads for retention rather than a separate base mechanism.
The 921 and 1156 are not interchangeable. They differ in base type, physical form factor, and wattage, meaning a socket designed for one will not accept the other.
The Hyundai Tiburon used the 1156 bulb across model years 1997-2006, representing the fitment for the majority of the production span covered by these specifications.
The 2007-2008 Tiburon uses the 921 wedge bulb rather than the 1156, indicating a change in the backup light socket design for those model years.
The wattage difference between the two bulbs is notable: the 1156 draws 21W while the 921 draws 16W. Substituting a higher-wattage bulb into a socket rated for a lower-wattage unit can stress the wiring and socket.