Toyota Sienna Ash Tray Bulb Size

The Toyota Sienna ash tray light requires a bulb size of 74 for proper installation within the interior lighting assembly. Data for the specified component covers the range from 1998 to 2003.

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
1998-2003	74

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W.	74

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Additional Notes

The Toyota Sienna uses the 74 bulb for the ash tray position across the 1998-2003 model years.
The 74 bulb is an ANSI-standardized type recognized in both the United States and Canada, which means it conforms to a defined set of electrical and physical criteria rather than being a proprietary specification.
It belongs to the T5 miniature wedge family, a form factor defined by a 5/16-inch tubular glass envelope and a wedge-style base that seats directly into a socket without a separate metal cap or pins.
The bulb operates at 12 volts and draws 1.4 watts, placing it among the lower-wattage lamp types used in automotive interiors, consistent with a small illumination role such as an ash tray light.
The wedge base design means the bulb is held in place by the socket walls alone, so fitment depends on the socket accepting the specific wedge width of the T5 form factor rather than a bayonet or screw interface.