Mitsubishi Endeavor Back Up Light Bulb Size

The Mitsubishi Endeavor back up light requires a 921 bulb size for proper installation and function within the rear lighting assembly. Available data for the specified vehicle covers the period from 2004 to 2011.

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
2010-2011	921
2004-2008	921

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921

Other Locations

Additional Notes

The Mitsubishi Endeavor uses the 921 bulb size across all listed model years for the back up light position, spanning 2004-2011.
The 921 is a wedge-type bulb, classified under the T15 designation, which refers to its tubular glass envelope size measured in eighths of an inch.
Wedge bulbs do not use a metal base or pins for connection. Instead, the glass envelope itself is pinched at the bottom to form a wedge shape that locks directly into the socket.
The 921 operates at 12 volts and draws 16 watts, which is consistent with standard automotive electrical systems.
The 921 bulb conforms to ANSI standards as recognized in both the United States and Canada, indicating a standardized specification for physical and electrical properties.
Because the 921 is an ANSI-standardized wedge bulb, it is interchangeable with other bulbs sharing the same T15 wedge base and compatible voltage and wattage ratings, provided the replacement meets those electrical specifications.