Mitsubishi Outlander Sport Dome Light Bulb Size

Mitsubishi Outlander Sport dome light replacement bulbs use H11, 12961, or DE3175 size specifications. The chart covers 2011 to 2024 production years with corresponding bulb size data.

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
2024	H11
2023	12961
2011-2020	DE3175

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Single-filament halogen bulb with PGJ19-2 base. Also approved in the US. 12V, 55W.	H11
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175

Other Locations

Additional Notes

The DE3175 is the dome light bulb size for the Mitsubishi Outlander Sport across the 2011-2020 model years, making it the most consistently specified bulb in this application by a wide margin.
The DE3175 follows the ANSI standard used in the US and Canada. It is a festoon-type bulb measuring 31mm in length with end-cap contacts that make electrical connection at both ends of the housing rather than through a side base.
The 2023 Outlander Sport uses the 12961, a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W. The wedge base design differs fundamentally from the festoon format used in earlier model years, meaning the two types are not interchangeable.
The 2024 Outlander Sport uses an H11 bulb for the dome light position. The H11 is a single-filament halogen bulb with a PGJ19-2 base, rated at 12V and 55W, and is recognized under ECE standards as well as approved for use in the US.
At 55W, the H11 specified for the 2024 model operates at a substantially higher wattage than the 5W T10 used in 2023 or the DE3175 used in earlier years, reflecting a significant difference in power draw between these three bulb types.
Each of the three bulb types specified across these model years uses a distinct base design: the festoon end-cap, the wedge base, and the PGJ19-2 collar base. None of the three formats are physically compatible with one another, so year-specific fitment must be observed.