Ram ProMaster Daytime Running Light Bulb Size

The Ram ProMaster daytime running light uses a 7440 bulb size for this component. The replacement chart covers vehicle production spanning 2014 to 2024.

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
2014-2024	7440

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W.	7440

Other Locations

Additional Notes

The Ram ProMaster uses the 7440 bulb for the daytime running light position across the 2014-2024 model years.
The 7440 is a T20 wedge-base bulb, meaning it uses a plastic wedge at its base rather than a metal pin or bayonet fitting to secure itself in the socket.
The 7440 operates at 12 volts and draws 21 watts, which is consistent with standard automotive electrical systems.
The 7440 is a single-filament bulb, meaning it produces only one light output level and is not capable of serving dual functions such as combined stop and tail lighting from a single unit.
The 7440 conforms to ANSI standards, indicating it meets a defined specification recognized across the United States and Canada for consistent physical and electrical characteristics.
The T20 bulb family includes both single-filament and dual-filament variants. The 7440 is the single-filament type, while the 7443 is the dual-filament equivalent. These two types share the same T20 wedge base form, but the 7443 has an offset pin arrangement that physically prevents it from seating in a socket designed for the 7440, making the two non-interchangeable.