The Chevrolet Cruze tail light utilizes 921, 7443, and 3057 bulb sizes depending on the specific version of the vehicle. Available data covers a range from 2011 through 2018 for the components listed.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Chevrolet Cruze tail light specifications cover two distinct positions: the inner tail light and the outer tail light, with the outer position carrying multiple bulb size entries depending on the model year.
The 194 is a T10 miniature wedge bulb rated at 12V and 3.78W. It serves as the inner tail light bulb across the 2016-2018 model years.
The 7443 is a T20 dual-filament wedge bulb rated at 12V with a 21W/5W output. Dual-filament bulbs carry two separate filaments within a single housing, allowing one bulb to serve both a running light and a brighter stop or turn signal function.
The 7443 is specified for the outer tail light position on the 2016-2018 Chevrolet Cruze.
The 921 is a T15 single-filament wedge bulb rated at 12V and 16W. It is listed as an outer tail light bulb for the 2017-2018 model years alongside the 7443, indicating that the outer tail light position on those years accommodates more than one bulb.
The 3057 is a T25 dual-filament wedge bulb rated at 12V with a 27W/7W output. It is specified for the outer tail light position on the 2011-2015 model years.
The outer tail light position on the Chevrolet Cruze uses different bulb sizes across its production span, with the 3057 applying to 2011-2015 and the 7443 applying to 2016-2018. These two bulbs are not interchangeable despite both being dual-filament wedge types, as they differ in physical size and wattage.
All four bulb types listed, the 194, 7443, 921, and 3057, conform to ANSI standards recognized in both the United States and Canada, meaning their specifications are standardized rather than proprietary.
The 921 and 7443 share the same model years for the outer tail light position in 2017 and 2018, but they are not interchangeable. The 921 is a single-filament bulb at 16W, while the 7443 is a dual-filament bulb at 21W/5W, and their T15 and T20 housings are physically distinct.
The 194 operates at 3.78W, which is the lowest wattage among all bulbs listed in these specifications, consistent with its role as a low-intensity inner tail light indicator rather than a primary stop or signal source.