Suzuki Vitara Dome Light Bulb Size

The Suzuki Vitara dome light requires a DE3175 bulb size for the interior lighting system. Data for the specific component covers the range from 1999 to 2004.

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
1999-2004	DE3175

Bulb Specifications

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

Other Locations

Additional Notes

The Suzuki Vitara uses the DE3175 bulb for the dome light across the 1999-2004 model years.
The DE3175 is an ANSI-standardized bulb designation, meaning it conforms to a defined set of electrical and physical specifications recognized across the United States and Canada.
The DE3175 is a festoon-style bulb, which is a cylindrical lamp that makes electrical contact through metal caps at each end rather than through a base socket or pins.
The 31mm figure in the DE3175 designation refers to the length of the bulb, which is the critical fitment factor for festoon lamps since the end caps must bridge the contact points within the fixture.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in conventional passenger vehicles.
Because festoon bulbs rely on length for proper contact, substituting a festoon bulb of a different length, such as a 28mm or 36mm unit, would result in a poor or failed connection even if the voltage rating matches.
The DE3175 designation is shared across a wide range of vehicle makes and models, which means the bulb is broadly available as a replacement part and is not exclusive to the Suzuki Vitara.