Mitsubishi Outlander PHEV Back Up Light Bulb Size

The Mitsubishi Outlander PHEV back up light requires a bulb size of 921 for the rear lighting assembly. Data for the specified component covers the range from 2018 to 2024.

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
2023-2024	921
2018-2021	921

Bulb Specifications

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

Other Locations

Additional Notes

The Mitsubishi Outlander PHEV uses the 921 bulb for its back up light across the 2018-2024 model years.
The 921 is a T15 wedge-base bulb, meaning it connects to its socket through a tapered plastic base rather than metal pins or a bayonet fitting.
The 921 operates at 12 volts and 16 watts, which is consistent with standard automotive electrical systems.
The 921 designation follows ANSI standards recognized in both the United States and Canada, making it a widely available replacement type across North American retail and wholesale markets.
The T15 designation refers to the bulb's tubular envelope size, expressed in eighths of an inch, placing its width at approximately 15/8 of an inch.
Wedge-base bulbs such as the 921 are not interchangeable with bayonet-base or pin-base types, as the socket design is specific to the wedge format.