The Lexus GX470 tail light requires a 7443 bulb size for the rear lighting assembly. Data for the specified component covers the period from 2003 to 2009.
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 specified for the outer tail light positions on the Lexus GX470 across all listed model years.
The 7443 is an ANSI-standard bulb recognized in the US and Canada, classified as a dual-filament wedge type in the T20 form factor, rated at 12 volts with a 21W/5W power draw across its two filaments.
The dual-filament design of the 7443 allows it to serve two distinct lighting functions within a single housing, with the higher 21W filament typically handling stop or turn signal duties and the lower 5W filament handling running light or parking light functions.
The 2003 model year carries a production date qualifier of "From 11/2002," indicating that the 7443 fitment applies only to units built from November 2002 onward within that model year.
The 2009 model year carries a production date qualifier of "To 08/2009," indicating that the 7443 fitment applies only to units built up to August 2009 within that model year.
The T20 wedge base of the 7443 is not compatible with bayonet-style or indexed-base sockets, making socket type a relevant factor when considering replacement bulbs.
The 7443 shares its T20 wedge base with the single-filament 7440, and the two types are not interchangeable despite their physical similarity, as the 7440 lacks the second filament required for dual-function applications.