Kia Sephia Trunk Bulb Size

The Kia Sephia trunk light utilizes DE3022, 6428, 13050, and DE3021 bulb sizes depending on the specific version of the vehicle. Available data covers the period from 1994 through 2001.

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
1998-2001	DE3022
1996-1997	6428
1995	13050
1994	DE3021

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3022
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6428
OEM/Wagner part number. Halogen bulb, specialty application. 12V.	13050
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3021

Other Locations

Additional Notes

The Kia Sephia trunk bulb specifications span the 1994-2001 model years, covering four distinct bulb types across that range.
The DE3022 is the most frequently specified trunk bulb in these records, appearing across the 1998-2001 model years. It is an ANSI-standardized festoon bulb with a 31mm length, end-cap contacts, and a 12V rating.
Festoon bulbs are a cylindrical lamp format that seats between two spring-loaded contacts at each end of a housing, which corresponds to the end-cap contact design noted for the DE3022 and DE3021.
The DE3021, specified for the 1994 Kia Sephia, shares the same 31mm length, end-cap contact design, and 12V rating as the DE3022. Despite their physical similarities, the two carry distinct ANSI designations and are not listed as interchangeable within these specifications.
The 6428 bulb, specified for the 1996-1997 Kia Sephia, is also a festoon type but with a 36mm length and an SV8.5 base, rated at 12V and 5W. Its longer body and different base type distinguish it from the DE3022 and DE3021.
The SV8.5 base on the 6428 refers to a festoon base with an 8.5mm cap width, a format common in European-origin vehicle lighting applications.
The 13050, specified for the 1995 Kia Sephia, is classified as an OEM/Wagner part number rather than an ANSI standard designation. It is described as a halogen bulb for a specialty application, rated at 12V.
The 1995 model year represents the only instance in these specifications where a halogen bulb type is listed for the trunk position, setting it apart from the festoon bulbs used across all other model years in this range.
The shift from the DE3021 in 1994 to the 13050 in 1995, followed by the 6428 in 1996-1997 and then the DE3022 from 1998 onward, reflects multiple bulb type changes across the Sephia's production run.
Because the DE3022 and DE3021 share physical characteristics but carry separate ANSI designations, substitution between them for the Kia Sephia trunk application is not supported by these specifications.