Lexus NX350h Turn Signal Bulb Size

The Lexus NX350h front turn signal uses a 7440NA bulb size. The chart covers 2023 to 2024 production years with replacement bulb size specifications.

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

Front Turn Signal

Years	US Type	EU Type	Shop
2023-2024	7440NA	WY21W	Check Price

Description	Type	Shop
ANSI standard (US & Canada). Single-filament wedge bulb (T20), natural amber glass. 12V, 21W.	7440NA	Check Price

The 7440NA is the front turn signal bulb for the Lexus NX350h across the 2023-2024 model years.
The 7440NA follows the ANSI standard, making it the designated specification for the United States and Canada markets.
As a single-filament wedge bulb in the T20 form factor, the 7440NA performs one dedicated function rather than sharing a filament between multiple lighting operations.
The natural amber glass of the 7440NA produces its turn signal color through the glass itself rather than through a colored lens or housing, which affects compatibility when replacing with clear-glass alternatives.
The 7440NA operates at 12V and 21W, values typical of automotive turn signal circuits designed around incandescent bulb loads.