Toyota 4Runner Sun Visor Bulb Size

The Toyota 4Runner sun visor requires 3 distinct bulb sizes: 12961, 6428, and 13050. The replacement chart covers vehicle production spanning 2003 to 2021.

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
2021	12961
2005	6428
2003-2004	13050

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
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 Toyota 4Runner sun visor bulb specifications cover three distinct bulb types across the listed model years: the 12961, 6428, and 13050.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, fitted with a W2.1x9.5d base and rated at 12V, 5W. This type is specified for the 2021 4Runner sun visor position.
The T10 wedge base is a push-in connector style that does not use a separate socket locking mechanism, relying instead on the tension of the base contacts to retain the bulb in its housing.
The 6428 follows the ANSI standard recognized in both the United States and Canada. It is a festoon bulb with a 36mm length and an SV8.5 base, also rated at 12V, 5W. This type is specified for the 2005 4Runner.
Festoon bulbs make contact at both ends of the bulb body rather than through a base pin or wedge, which makes them physically incompatible with wedge or bayonet-style sockets.
The 13050 carries an OEM and Wagner part number designation and is classified as a halogen bulb intended for a specialty application, rated at 12V. This type is specified for the 2003-2004 4Runner.
Although the 12961 and 6428 share the same 12V, 5W electrical rating, their base types differ entirely. The wedge base of the 12961 and the SV8.5 festoon base of the 6428 are not interchangeable.
The 13050 is identified as a halogen type, which distinguishes it from the standard incandescent construction of the 6428 festoon and the 12961 wedge bulb. Halogen bulbs operate at higher filament temperatures and are sensitive to contamination from skin oils.
The shift from the 13050 in 2003-2004 to the 6428 in 2005 represents a change in both bulb technology and base type for the sun visor position, meaning parts from those adjacent years are not interchangeable.
The 2021 specification uses the 12961 wedge bulb, which is physically and electrically distinct from both the 6428 and 13050 types used in earlier model years, making cross-year substitution incompatible.