Hyundai Santa Fe Sport Turn Signal Bulb Size

Additional Notes

• The Hyundai Santa Fe Sport uses two different bulb standards across its front and rear turn signal positions: the ANSI standard, which is common in the United States and Canada, and the ECE standard, which is used in Europe and worldwide markets.
• The 2357NA bulb is specified for the front turn signal across all model years from 2013-2018. It is a dual-filament bulb rated at 12V with a higher-draw filament of 26.9W and a lower-draw filament of 8W, mounted on a BAY15d bayonet base.
• The BAY15d base used by the 2357NA features offset pins, which physically prevents it from being inserted in the same socket as a BA15s base. This means the front and rear turn signal bulbs on this vehicle are not interchangeable with each other.
• The natural amber glass coating on the 2357NA produces an amber output without relying on a colored lens, which is a characteristic of NA-designated bulbs under the ANSI classification system.
• The rear turn signal on the Hyundai Santa Fe Sport (2013-2016) uses the 1156NA, a single-filament bulb with a BA15s bayonet base rated at 12V and 21W. Like the 2357NA, it carries natural amber glass.
• For the 2017-2018 rear turn signal position, the specification shifts to the P21W, an ECE-standard single-filament bulb also rated at 12V and 21W with a BA15s base. The P21W does not carry the natural amber glass of the NA-designated bulbs.
• Although the 1156NA and P21W share the same BA15s base and the same 12V/21W rating, they are governed by different standards bodies and may differ in light output tolerances and glass construction, which can affect fitment suitability depending on the socket and lens assembly.
• The dual-filament design of the 2357NA means the bulb serves two separate electrical circuits within a single housing, a configuration that is physically incompatible with single-filament sockets such as those using the BA15s base.