Ram ProMaster City Turn Signal Bulb Size

Ram ProMaster City front and rear turn signal bulbs utilize 7440NA size, with rear applications also accommodating PY21W and 12496 bulb sizes. The replacement chart documents specifications across 2015 through 2022 vehicle production years.

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

Front Turn Signal

Years	US Type	EU Type	Shop
2015-2022	7440NA	WY21W	Check Price

Rear Turn Signal

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2022	7507	PY21W	Check Price
2021	7440NA	WY21W	Check Price
2017-2020	12496	12496	Check Price
2015-2016	7507	PY21W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament wedge bulb (T20), natural amber glass. 12V, 21W.	7440NA	Check Price
ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W.	PY21W	Check Price
Philips/Osram part number. Halogen bulb, specialty application. 12V.	12496	Check Price

Other Locations

Additional Notes

The 7440NA is an ANSI-standard single-filament wedge bulb in the T20 form factor, rated at 12V and 21W. Its natural amber glass produces the required turn signal color without relying on a colored lens or housing.
The PY21W operates at the same 12V, 21W rating as the 7440NA but uses a BAU15s bayonet base rather than a wedge base, making the two bulbs physically incompatible with each other despite sharing identical wattage.
The 7440NA follows the ANSI standard used in the United States and Canada, while the PY21W follows the ECE standard used in Europe and internationally. The presence of both types across different model years of the Ram ProMaster City reflects variation in regional sourcing or assembly specifications.
The 12496 is a Philips/Osram part number designating a 12V halogen bulb for a specialty application. It is not interchangeable with the 7440NA or PY21W due to differences in base type and fitment.
The Ram ProMaster City uses the 7440NA for the front turn signal across all model years from 2015-2022, indicating a consistent fitment for that position throughout the vehicle's production run.
The rear turn signal position shows variation across model years. The 2015-2016 and 2022 model years use the PY21W, the 2017-2020 model years use the 12496, and the 2021 model year uses the 7440NA.
Because the rear turn signal bulb type changes across model years, confirming the exact model year is necessary before selecting a replacement to avoid a base-type mismatch.