The Lexus SC430 tail light requires a 7443 bulb size for proper illumination and function. Data provided covers the specific range from 2002 through 2005 for the vehicle.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 7443 is the sole bulb type listed across all outer tail light positions for the Lexus SC430, covering model years 2002-2005.
The 7443 is an ANSI-standardized bulb used in the United States and Canada, classified under the T20 wedge form factor.
As a dual-filament bulb, the 7443 operates at two wattage levels: 21W for the higher-intensity filament and 5W for the lower-intensity filament, both on a 12V circuit.
The dual-filament design allows a single bulb to serve more than one lighting function within the same housing, which is typical for combined stop and tail light applications.
The 2005 model year carries a production date qualifier for one of its outer tail light entries, specifying fitment up to August 2005, while the remaining 2005 entry carries no such restriction.
The date-qualified 2005 entry and the unrestricted 2005 entry both reference the same 7443 bulb size, indicating that the production cutoff notation reflects a fitment boundary rather than a bulb change.