Subaru Tribeca Dome Light Bulb Size

The Subaru Tribeca dome light utilizes a DE3022 bulb size for interior illumination. Available data covers the specific time period from 2008 through 2014 for the mentioned vehicle.

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
2008-2014	DE3022

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3022

Other Locations

Additional Notes

The Subaru Tribeca uses the DE3022 bulb for its dome light across all listed model years, spanning 2008-2014.
The DE3022 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.
Festoon bulbs are held in place by spring-loaded clips within the dome light housing, which grip the end caps to maintain both physical and electrical contact.
The DE3022 has a nominal length of 31mm, which is the standard measurement used to distinguish it from other festoon sizes such as the 28mm DE3021 or the 36mm DE3175.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in conventional passenger vehicles.
The DE3022 designation follows ANSI standards, indicating it conforms to specifications recognized across the United States and Canada.
Because festoon bulbs are sized by length, substituting a bulb of a different length, such as a 28mm or 36mm festoon, would result in an improper fit within the Tribeca's dome light housing.
The uninterrupted use of the DE3022 across the 2008-2014 Subaru Tribeca model years indicates a consistent dome light housing design throughout the vehicle's production run.