Audi SQ5 Sportback Turn Signal Bulb Size

Additional Notes

• The 12174NA is a natural amber glass bulb operating at 12 volts. Its amber-tinted glass produces the orange-colored light required for turn signal applications without relying on a colored lens or coating to achieve the correct hue.
• The 12174SV is a Philips SilverVision halogen bulb also rated at 12 volts. It features an enhanced coating that gives the glass a silver appearance when unlit, while still producing amber-compliant light when energized.
• Both bulb types share the same base numerical designation, 12174, indicating they occupy the same physical socket and electrical position in the Audi SQ5 Sportback front turn signal housing.
• The 2023-2024 model years of the Audi SQ5 Sportback use the 12174NA as the specified front turn signal bulb, while the 2021 model year uses the 12174SV variant instead.
• Because the 12174NA and 12174SV are distinct part numbers with different optical coatings, substituting one for the other may affect the color output or appearance of the turn signal, even though both operate at 12 volts.