Subaru SVX Dome Light Bulb Size

The Subaru SVX dome light requires a DE3175 bulb size for proper installation and function within the interior cabin. Available data for the bulb specifications covers the range from 1992 to 1997.

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
1992-1997	DE3175

Bulb Specifications

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

Other Locations

Additional Notes

The Subaru SVX uses the DE3175 bulb for the dome light across all available model years, spanning 1992-1997.
The DE3175 is a festoon-type bulb, meaning it is cylindrical in shape and makes electrical contact through metal caps at each end rather than through a base socket.
The 31mm length in the DE3175 designation refers to the distance between the two end-cap contacts, which is the critical fitment factor for festoon bulbs in enclosed dome light housings.
The DE3175 operates at 12 volts, consistent with standard automotive electrical systems.
The DE3175 carries ANSI standardization for the United States and Canada, meaning the specification conforms to a defined industry standard within those markets.
Because the Subaru SVX dome light housing is sized for a 31mm festoon bulb, substituting a festoon bulb of a different length, such as the common 36mm or 41mm variants, would result in an improper fit.