Mitsubishi Mirage G4 Trunk Bulb Size

The Mitsubishi Mirage G4 trunk light utilizes 12961 and DE3022 bulb sizes for the rear storage area illumination. Data for the specified lighting components covers the period from 2017 through 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 Type	Shop
2021-2024	12961	Check Price
2017-2020	DE3022	Check Price

Bulb Specifications

Description	Type	Shop
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961	Check Price
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3022	Check Price

Other Locations

Additional Notes

The Mitsubishi Mirage G4 trunk compartment uses two distinct bulb types across the 2017-2024 model range: the 12961 (T10 wedge) for 2021-2024 and the DE3022 (festoon) for 2017-2020.
The 12961 is a Philips part number designation for a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W.
The T10 wedge format uses a tapered plastic base that wedges directly into a socket, requiring no separate locking mechanism or end contacts to retain the bulb.
The DE3022 is an ANSI-standard festoon bulb with a 31mm length and end-cap contacts, rated at 12V. The end-cap design means the bulb is held under spring tension between two metal contacts within the housing.
The two bulb types are not interchangeable. The T10 wedge base and the 31mm festoon end-cap format require physically different socket types, making cross-year substitution incompatible without a socket adapter.
The 2020 model year represents the transition point between the two bulb formats, with 2017-2020 using the DE3022 festoon and 2021-2024 using the 12961 T10 wedge.