The Mitsubishi Lancer brake light utilizes a 7443 bulb size for illumination across all listed vehicle applications. Data for the specified component covers the period from 2002 through 2017.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 7443 bulb is the most frequently specified brake bulb across the Mitsubishi Lancer model years listed, appearing in the 2002-2003 and 2007-2009 and 2015-2017 model years for the standard brake light position.
The 7443 follows the ANSI standard used in the United States and Canada, making it a North American market specification rather than a global one.
As a dual-filament wedge bulb in the T20 form factor, the 7443 operates at 12 volts and draws 21 watts on its primary filament and 5 watts on its secondary filament, allowing it to serve both a high-intensity brake function and a lower-intensity running light function within a single unit.
The center high mount stop light on the 2007 Mitsubishi Lancer uses the 7440 rather than the 7443 specified for the standard brake lights on the same model year.
The 7440 and 7443 share the same T20 wedge form factor and 12V/21W primary filament rating, but the 7440 is a single-filament bulb, meaning the two types are not interchangeable despite their physical similarity.
The center high mount stop light on the 2002-2003 Mitsubishi Lancer uses the P21W bulb, which follows the ECE standard associated with European and international markets rather than the ANSI standard used for the main brake lights on those same years.
The P21W uses a BA15s bayonet base, a mounting style physically incompatible with the wedge base of the 7440 and 7443, making cross-substitution between these types mechanically impossible without modification.
Although the P21W and the 7440 share a single-filament design and a 12V/21W electrical rating, their differing base types mean they serve equivalent electrical roles but are not physically interchangeable.