Nissan 370Z front turn signal bulbs use 7444NA or 7443NA sizes, while rear turn signal bulbs require 7440NA size. The replacement bulb chart covers 2009 through 2020 production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Nissan 370Z uses T20 wedge-style bulbs across all front and rear turn signal positions for every model year listed in the specifications.
The "NA" suffix on all three bulb types denotes natural amber glass, meaning the bulb envelope itself is tinted amber rather than clear. This coloring is built into the glass rather than applied as a coating.
The 7443NA and 7444NA are both dual-filament T20 wedge bulbs rated at 12V with a 21W high filament and a 5W low filament, which allows a single bulb to serve two lighting functions simultaneously.
The 7440NA used in the rear turn signal position across all listed years is a single-filament T20 wedge bulb rated at 12V and 21W, dedicated solely to the turn signal function.
All three bulb types conform to ANSI standards applicable in the United States and Canada.
The front turn signal on the Nissan 370Z uses the 7443NA for model years 2009-2018, with the exception of 2012, which uses the 7444NA along with 2019 and 2020.
The 7443NA and 7444NA share the same T20 wedge base, voltage, and wattage ratings. Substituting one for the other in a dual-filament application is generally considered electrically compatible, though fitment should be confirmed against the specific socket design.
The 7440NA is not interchangeable with the 7443NA or 7444NA in a dual-filament application, as it carries only a single filament and would not replicate the secondary low-wattage function those bulbs provide.