The Lexus GS460 front and rear turn signal bulbs both utilize a 7440NA size. The replacement chart covers 2008 through 2011 model years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Lexus GS460 uses the 7440NA bulb size for both the front and rear turn signals across all model years covered, spanning 2008-2011.
The 7440NA is a single-filament wedge bulb, meaning it serves one lighting function only and cannot replicate dual-filament behavior such as combined stop and turn signal operation.
The T20 wedge base of the 7440NA is a push-in connector type, which seats directly into a matching socket without a bayonet or screw mechanism.
The 7440NA operates at 12 volts and 21 watts, a wattage rating consistent with standard automotive turn signal applications requiring sufficient brightness for daytime visibility.
The "NA" suffix in the 7440NA designation indicates natural amber glass, meaning the amber color is produced by the glass envelope itself rather than by an amber-tinted lens or housing.
The 7440NA conforms to ANSI standards applicable in the United States and Canada, reflecting a North American market specification for this vehicle.
The standard 7440 bulb produces white light, making it not directly interchangeable with the 7440NA in applications where amber output is required by regulation, as the GS460 turn signal positions are.
Because the front and rear turn signal positions share the same 7440NA specification on the GS460, a single bulb type covers all four turn signal sockets on the vehicle.