Mitsubishi Lancer Dome Light Bulb Size

The Mitsubishi Lancer dome light requires a DE3175 bulb size for proper installation and function within the interior cabin. Available data covers the specific time range from 2002 through 2017.

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
2015-2017	DE3175
2007-2009	DE3175
2002-2003	DE3175

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175

Other Locations

Additional Notes

The Mitsubishi Lancer dome light uses the DE3175 bulb across all model years listed in the specifications.
The DE3175 is a festoon-type bulb, meaning it is cylindrical in shape and makes electrical contact through metal caps at both ends rather than through a base socket.
The DE3175 has a nominal length of 31mm, which refers to the distance between its two end-cap contacts.
The bulb operates at 12 volts, consistent with standard automotive electrical systems.
The DE3175 designation follows the ANSI standard, which applies to the United States and Canada.
The specifications cover the 2015-2017 Lancer, the 2007-2009 Lancer, and the 2002-2003 Lancer, all sharing the same DE3175 dome light bulb size.
Because the DE3175 is an ANSI-standardized festoon bulb, it is physically interchangeable with other bulbs sharing the same 31mm end-cap format, provided the voltage and socket type also match.