Review on AntennaMastsRus - Power Antenna Mast: Compatible with Lexus ES250, ES300, GS300, LS400, SC300, SC400, SC430 - Enhance Your Radio Reception! by Doug Powell

This is an inexpensive aftermarket replacement antenna. On the plus side, it looks and works just like the original antenna. The plastic interior accommodated the antenna motor quickly and easily. However, the installation was tedious. If you can easily access the motor to pull out the old nylon drive gear, it should be pretty quick. My particular car had a lot of interior trim pieces that had to be removed and reinstalled. The antenna is Chinese like most things sold on Revain and is unbranded. Watch a YouTube video on how to install it in your car or get a good repair manual for instructions.