Ram 1500 Classic Tail Light Bulb Size

The Ram 1500 Classic tail light utilizes bulb size 7440 or bulb size 3057 depending on the specific configuration of the vehicle. Data for the lighting components covers the range from 2019 through 2023.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2023	7440
2019	3057 (Without Projector-Type Headlamps)

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W.	7440
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3057

Other Locations

Additional Notes

The Ram 1500 Classic uses two distinct bulb types across its tail light specifications: the 7440 and the 3057, both conforming to ANSI standards recognized in the US and Canada.
The 7440 is a single-filament wedge bulb in the T20 form factor, rated at 12V and 21W. Single-filament bulbs serve one lighting function, such as a tail or brake light, but not both simultaneously.
The 3057 is a dual-filament wedge bulb in the T25 form factor, rated at 12V with two wattage outputs: 27W for the high-intensity filament and 7W for the low-intensity filament. This dual-filament design allows one bulb to serve two functions, typically brake and tail light operation.
The T25 form factor of the 3057 is physically larger than the T20 form factor of the 7440. These two bulbs are not interchangeable despite both being wedge-type designs.
The 2023 Ram 1500 Classic uses the 7440 bulb for the tail light position.
The 2019 Ram 1500 Classic uses the 3057 bulb specifically in configurations without projector-type headlamps, indicating that headlamp configuration is a determining factor in tail light bulb fitment for that year.