Scion tC Trunk Bulb Size

The Scion tC trunk utilizes bulb sizes DE3022, DE3021, 6428, and 13050 across various production versions. Data for the specified lighting components covers the period from 2005 through 2016.

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
2014-2016	DE3022
2013	DE3021
2012	6428
2011	13050
2010	6428
2009	13050
2005-2008	DE3022

Bulb Specifications

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

Other Locations

Additional Notes

The DE3022 is the most frequently specified trunk bulb across the Scion tC model years covered, appearing in the 2005-2008 and 2014-2016 model years.
The DE3022 is a festoon-type bulb with a 31mm length and end-cap contacts, operating at 12 volts and conforming to ANSI standards recognized in both the United States and Canada.
The DE3021, used in the 2013 Scion tC, shares the same festoon form factor, 31mm length, end-cap contact design, and 12-volt rating as the DE3022, though the two carry distinct ANSI designations and are not confirmed as interchangeable.
The 6428 bulb, fitted to the 2010 and 2012 tC, is also a festoon type but with a 36mm length and an SV8.5 base, rated at 12 volts and 5 watts, making it physically distinct from the 31mm DE-series bulbs used in other years.
Because the 6428 is 36mm long and uses an SV8.5 base while the DE3022 is 31mm with end-cap contacts, these two festoon bulbs are not interchangeable despite both being festoon-type and 12-volt units.
The 13050, specified for the 2009 and 2011 tC, is classified as a halogen bulb for a specialty application and is referenced by an OEM/Wagner part number rather than an ANSI designation, placing it in a different category from the festoon bulbs used across the remaining model years.