Hyundai Elantra GT Dome Light Bulb Size

The Hyundai Elantra GT dome light requires a DE3175 bulb size for proper installation within the interior overhead housing. Available data covers a span of time starting from 2013 through 2020.

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 Type	Shop
2019-2020	DE3175 (With Halogen Capsule Headlamps)	Check Price
2013-2018	DE3175	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175	Check Price

Other Locations

Additional Notes

The DE3175 is the dome light bulb size for the Hyundai Elantra GT across the 2013-2020 model years.
The DE3175 is a festoon-type bulb, meaning it is cylindrical in form and makes electrical contact through metal caps at each end rather than through a base socket.
The bulb operates at 12 volts, consistent with standard automotive electrical systems.
The DE3175 has a 31mm length, which is the critical physical factor governing fitment in the dome light housing.
The DE3175 designation follows ANSI standards recognized in both the United States and Canada, making it a widely available replacement type across North American markets.
For the 2019-2020 model years, the DE3175 specification carries a notation indicating it applies specifically to vehicles equipped with halogen capsule headlamps, reflecting a trim-level or package distinction within those years.
Because festoon bulbs rely on end-cap contact rather than a keyed base, substituting a festoon bulb of a different length risks poor contact or physical incompatibility with the housing, even if the voltage rating matches.