BMW i3 Turn Signal Bulb Size

The BMW i3 turn signal requires a bulb size of 12961 for the specified lighting component. Data for the requested information covers the range from 2021 to 2021.

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

Front Turn Signal

Years	Bulb Size
2014-2018	12174SV

Bulb Specifications

Description	Bulb Size
Philips SilverVision part number. Enhanced coating halogen bulb. 12V.	12174SV

Other Locations

Additional Notes

The BMW i3 uses the 12174SV bulb for the front turn signal across all listed model years, spanning 2014-2018.
The 12174SV is a Philips SilverVision part number, identifying it as a product within Philips' automotive lighting line rather than a universal industry-standard bulb code.
The bulb operates at 12 volts, which is consistent with standard 12V automotive electrical systems found in passenger vehicles.
The 12174SV features an enhanced coating, a halogen construction that modifies the visible output of the bulb while retaining the underlying halogen light source technology.
Halogen bulbs of this type produce light through a tungsten filament enclosed in a gas-filled envelope, where the halogen gas cycle extends filament life and maintains lumen output over time.
Because the 12174SV is a Philips-specific part number, direct substitution with bulbs referenced only by generic trade numbers warrants verification of voltage, base type, and wattage compatibility before fitment.