Chrysler 200 Turn Signal Bulb Size

Chrysler 200 front turn signal bulbs utilize 12174NA or 3157NA size, while rear turn signal bulbs use 7440 size. The replacement chart covers 2011 through 2017 model years with corresponding bulb size specifications.

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

Front 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
2015-2017	12174NA	12174NA	Check Price
2011-2014	3157NA	PY27/7W	Check Price

Rear Turn Signal

Years	US Type	EU Type	Shop
2015-2017	7440	W21W	Check Price

Bulb Specifications

Description	Type	Shop
OEM part number. Natural amber glass variant. 12V.	12174NA	Check Price
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.	3157NA	Check Price
ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W.	7440	Check Price

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Additional Notes

The 3157NA is an ANSI-standardized dual-filament wedge bulb in the T25 form factor, rated at 12V with a 27W/7W output split. The dual-filament design allows a single bulb to serve two lighting functions at different wattages, which is why it is commonly used in positions that combine turn signal and parking light duties.
The 7440 is an ANSI-standardized single-filament wedge bulb in the T20 form factor, rated at 12V and 21W. Unlike the 3157NA, it carries only one filament, making it unsuitable as a direct replacement in any socket requiring dual-filament operation.
The 12174NA is an OEM part number rather than an ANSI-standardized designation, rated at 12V. Both the 12174NA and the 3157NA carry natural amber glass, which produces an amber-colored output without relying on a colored lens or a coated bulb.
The Chrysler 200 front turn signal uses the 3157NA for the 2011-2014 model years and transitions to the 12174NA for 2015-2017. These two bulbs are not confirmed interchangeable, as the 12174NA is an OEM-specific designation while the 3157NA follows an ANSI standard, and their socket and filament configurations may differ.
The 7440 and the 3157NA share the same 12V operating voltage but differ in filament count and wattage. The 7440 operates at a single 21W rating, while the 3157NA operates at 27W on its primary filament and 7W on its secondary. Substituting one for the other in a given socket position would not be appropriate without confirming socket compatibility.
The rear turn signal position on the Chrysler 200 is specified exclusively for the 2015-2017 model years, all of which use the 7440 bulb.
The T25 and T20 designations refer to the wedge base width of each bulb type, with T25 being wider than T20. This physical difference means the 3157NA and 7440 are not interchangeable at the socket level regardless of voltage compatibility.