Hyundai Excel Dome Light Bulb Size

The Hyundai Excel dome light requires a DE3175 bulb size for proper installation within the interior overhead housing. Provided information covers the specific range from 1986 through 1994.

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
1986-1994	DE3175	Check Price

Bulb Specifications

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

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Additional Notes

The Hyundai Excel uses the DE3175 bulb for the dome light across the full 1986-1994 model year range covered by these specifications.
The DE3175 is a festoon-type bulb, meaning it is cylindrical in shape with flat metal contacts at each end rather than a screw or bayonet base.
Festoon bulbs seat by pressing lengthwise between two spring clips inside the dome light housing, with the end-cap contacts completing the circuit at both terminals.
The DE3175 has a nominal length of 31mm, which is the figure that determines physical fitment within the lamp housing.
The bulb operates on a 12-volt system, consistent with standard automotive electrical architecture.
The DE3175 designation follows ANSI standards recognized in both the United States and Canada, meaning the bulb specification is consistent across North American markets.
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 Excel's dome light housing.