Chevrolet Cruze front turn signal bulbs use 7443NA and 7444NA sizes, while rear turn signal bulbs use 7440NA size. The replacement chart covers 2011 through 2018 model years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 7443NA and 7440NA bulbs are the most frequently specified types across the Chevrolet Cruze turn signal positions, with the 7443NA covering the front turn signal on 2011-2016 and 2018 model years, and the 7440NA covering the rear turn signal across all eight model years listed.
Both the 7443NA and 7444NA are dual-filament T20 wedge bulbs rated at 12V with a 21W high filament and a 5W low filament, while the 7440NA is a single-filament T20 wedge bulb rated at 12V and 21W.
All three bulb types, the 7443NA, 7444NA, and 7440NA, carry natural amber glass construction, which produces the amber turn signal color directly from the glass rather than relying on a colored lens or housing.
All three types conform to ANSI standards applicable in the United States and Canada, placing them within a regulated performance and dimensional classification system.
The 7444NA is specified exclusively for the front turn signal position on the 2017 Chevrolet Cruze, distinguishing that model year from the 7443NA fitment used across the remaining years in the front position.
Although the 7443NA and 7444NA share the same T20 wedge base, filament count, voltage rating, and wattage values, they carry distinct part numbers, and the specifications assign them to different model years in the front turn signal position, indicating they are not treated as interchangeable in this application.
The single-filament 7440NA used at the rear operates solely at 21W with no secondary low-power filament, reflecting a rear turn signal function that does not require a combined running light or parking light output from the same bulb.
The T20 wedge base format is shared across all three bulb types, meaning the physical socket type is consistent throughout all listed front and rear turn signal positions on the Cruze across the 2011-2018 span.