Kia Forte Parking Light Bulb Size

The Kia Forte parking light requires a 2357NA bulb size for the specific lighting component located on the exterior of the vehicle. Data provided for the bulb specifications covers the range from 2010 through 2013.

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

Front Parking Light

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
2023	2357NA	P21/5W	Check Price
2021-2022	12961	12961	Check Price
2018	12961	12961	Check Price

Parking Light

Years	US Type	EU Type	Shop
2010-2013	2357NA	P21/5W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 26.9W/8W.	2357NA	Check Price
ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W.	P21/5W	Check Price
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961	Check Price

Other Locations

Additional Notes

The 2357NA is an ANSI-standardized bulb used across the Kia Forte for the 2010-2013 and 2023 front parking light positions. Its standardization under ANSI means it is produced by multiple manufacturers to a shared specification, making it widely available across the US and Canadian markets.
The 2357NA operates on a dual-filament design with a BAY15d bayonet base, running at 12V with a wattage split of 26.9W on the primary filament and 8W on the secondary. The natural amber glass produces a yellow-tinted output without the need for a colored lens or separate amber coating.
The BAY15d bayonet base on the 2357NA features offset pins, which physically prevent incorrect insertion. This base type is not interchangeable with single-filament bayonet variants such as the BA15s, despite their outward similarity.
The 12961 is a Philips part number designation for a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W. It is the specified front parking light bulb for the Kia Forte across the 2018 and 2021-2022 model years.
The T10 wedge format of the 12961 uses a plastic wedge base rather than a metal pin or bayonet fitting. The W2.1x9.5d base designation refers to the contact width and insertion depth, and it is not compatible with the BAY15d bayonet socket used by the 2357NA.
The wattage difference between the two bulb types is substantial. The 2357NA draws up to 26.9W on its high-output filament, while the 12961 draws only 5W. These two bulbs serve different socket types and wattage classes, making them non-interchangeable regardless of voltage compatibility.
The 2023 Kia Forte uses the 2357NA for its front parking light, while the 2021-2022 model years use the 12961. These two consecutive generations require different socket types, meaning a direct bulb swap between a 2022 and 2023 unit is not possible without a socket adapter or wiring modification.