Toyota 4Runner Turn Signal Indicator Bulb Size

Toyota 4Runner turn signal indicator bulb uses a 74 size for this component. The replacement chart covers 2003 to 2005 production years with corresponding bulb size data.

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
2003-2005	74	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W.	74	Check Price

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Additional Notes

The T5 miniature wedge bulb, designated as size 74 under the ANSI standard used in the US and Canada, operates at 12 volts and draws 1.4 watts, placing it among the lower-wattage bulbs found in automotive instrument and indicator applications.
The Toyota 4Runner uses the size 74 bulb for its turn signal indicator across the 2003-2005 model years.
The T5 designation refers to the bulb's tubular envelope, with the numeric value representing the width in eighths of an inch, making it a notably small form factor suited for dashboard indicator use.
The wedge base design of the 74 bulb means it is retained by the socket through friction on the base itself rather than a separate bayonet or screw mechanism, which affects how the bulb is seated and removed.
At 1.4 watts, the 74 bulb produces minimal heat output compared to higher-wattage automotive bulbs, a characteristic consistent with its role as a dashboard indicator rather than an exterior lighting source.
The ANSI standardization of the 74 bulb means fitment is governed by a defined specification, and substitutions should conform to the same T5 wedge base, 12V rating, and 1.4W draw to maintain correct socket fit and circuit load.