The Toyota Echo back up light requires a 7440 bulb size for proper installation and function within the rear lighting assembly. Data for the specified component covers the period from 2000 through 2005.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Toyota Echo uses the 7440 bulb across all back up light positions for the 2000-2005 model years.
The 7440 is a single-filament wedge bulb built to the T20 form factor, rated at 12 volts and 21 watts.
The T20 wedge base design means the bulb is held in place by the socket walls rather than by pins or a bayonet collar, which is a common trait of wedge-type automotive bulbs.
The 7440 designation follows ANSI standards as recognized in the United States and Canada, meaning the bulb conforms to a defined set of electrical and physical specifications shared across manufacturers.
For the Outer Back Up Light on the 2002 Toyota Echo, the 7440 fitment applies from August 2002 onward, indicating a mid-year specification that applies to vehicles produced after that date.
Because the 7440 is a single-filament bulb, it is not interchangeable with dual-filament variants such as the 7443, even though those bulbs share the same T20 wedge base and may physically fit the socket.