The Nissan Versa brake light utilizes 7443 and P21/5W bulb sizes for the lighting components located at the rear of the vehicle. Data for the specific bulb requirements spans from 2013 through 2023.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Nissan Versa brake light position uses two distinct bulb types across its model years: the 7443 and the P21/5W. Both operate at 12V and share a 21W/5W dual-filament output rating, meaning they perform the same electrical function despite following different international standards.
The 7443 follows the ANSI standard used in the United States and Canada. It is a dual-filament wedge bulb in the T20 form factor, where the two filaments serve separate functions, with the higher 21W filament activating for braking and the lower 5W filament serving as a running light.
The P21/5W follows the ECE standard common in Europe and worldwide markets. It uses a BAY15d bayonet base rather than a wedge-style fitting, which makes it physically incompatible with sockets designed for the 7443, even though both bulbs share identical voltage and wattage ratings.
The Nissan Versa (2013-2020) brake light position uses the P21/5W for model years 2013-2019, with the exception of 2020, which uses the 7443. The 2021 model year returns to the P21/5W, while 2022-2023 use the 7443.
Because the 7443 and P21/5W use different base types, a wedge socket and a bayonet socket respectively, the two bulbs are not interchangeable despite their matching electrical specifications. Substituting one for the other without an adapter is not possible.
The Center High Mount Stop Light on the Nissan Versa uses the 921 bulb for model years 2013-2019. The 921 is a single-filament wedge bulb in the T15 form factor, rated at 12V and 16W.
The 921 is a single-filament bulb, which distinguishes it functionally from the dual-filament 7443 and P21/5W used in the main brake light position. Its sole filament is dedicated entirely to the stop light function.
The T15 form factor of the 921 is physically smaller than the T20 form factor of the 7443. The two wedge bulbs are not interchangeable due to the difference in wedge base sizing.