Subaru Tribeca Map Light Bulb Size

The Subaru Tribeca map light requires a DE3175 bulb size for proper installation and function within the interior overhead lighting housing. Available data covers the specific range from 2008 to 2014 for the mentioned vehicle components.

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	DE3175

Bulb Specifications

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

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Additional Notes

The Subaru Tribeca uses the DE3175 bulb size for the map light across all model years listed, spanning 2008-2014.
The DE3175 is a festoon-type bulb, meaning it is cylindrical in shape and seats between two spring-loaded end-cap contacts rather than fitting into a socket with a base pin or bayonet mount.
The DE3175 operates at 12 volts, which is consistent with standard 12V automotive electrical systems.
The 31mm length is a defining physical attribute of the DE3175, and fitment depends on this measurement matching the span between the contact points in the Tribeca's map light housing.
The DE3175 conforms to ANSI standards as recognized in the United States and Canada, indicating a standardized specification for voltage, physical size, and contact configuration within those markets.
Festoon bulbs of similar length, such as the DE3021 or DE3022, are sometimes listed as interchangeable with the DE3175 in certain applications, though compatibility depends on the specific housing tolerances of the Subaru Tribeca map light fixture.