Toyota GR Corolla Brake Bulb Size

Toyota GR Corolla Center High Mount Stop Light uses a 194 bulb size for replacement. The chart covers 2023 to 2024 model years with corresponding bulb size data.

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

Center High Mount Stop Light

Years	US Type	EU Type	Shop
2023-2024	194	W5W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194	Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with W2.1x9.5d wedge base. 12V, 5W.	W5W	Check Price

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Additional Notes

The 194 bulb is the most prominent type in these specifications, serving as the center high mount stop light size for the Toyota GR Corolla across the 2023-2024 model years.
The 194 bulb follows the ANSI standard applicable in the US and Canada, meaning it conforms to a regulated specification for electrical and physical compatibility rather than a manufacturer-specific design.
It belongs to the T10 miniature wedge family, a form factor characterized by a wedge-shaped base that seats directly into a socket without a separate metal cap or pins.
The bulb operates at 12 volts and draws 3.78 watts, placing it in the low-wattage range typical of indicator and auxiliary lighting rather than primary illumination.
Because the 194 is an ANSI-standardized T10 wedge, it is physically interchangeable with other bulbs sharing the same base type, though electrical compatibility depends on matching voltage and wattage ratings to the socket requirements.