The Mitsubishi i-MiEV front turn signal requires a 7440 bulb size, while the rear turn signal uses a 7440NA bulb size. The replacement chart covers 2012 through 2017 model years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mitsubishi i-MiEV uses the 7440 bulb for the front turn signal across the 2012, 2014, and 2016-2017 model years.
The 7440 is a single-filament wedge bulb classified under the T20 form factor, rated at 12V and 21W, and recognized under ANSI standards in the US and Canada.
The rear turn signal on the i-MiEV uses the 7440NA across the same model years, which shares the T20 wedge form factor, 12V rating, and 21W output as the 7440.
The distinguishing feature of the 7440NA is its natural amber glass envelope, which produces an amber light output without relying on a colored lens or socket filter.
Because the 7440 and 7440NA share the same T20 wedge base and electrical ratings, they are physically interchangeable, though substituting a clear 7440 in a rear position designed for the 7440NA may affect the color output of the turn signal.
The single-filament construction of both bulb types means each serves only one lighting function, as opposed to dual-filament bulbs that combine two functions such as turn signal and brake light in one unit.