Footrest
FOOTREST ASSY, FRONT SEAT, NO.2
71980-40131-B2 Footrest Assy, Front Seat, No.2
71980-40131-B3 Footrest Assy, Front Seat, No.2
71980-40131-E1 Footrest Assy, Front Seat, No.2
The above part numbers show fit for 2006-2017 models.I haven't been able to find older model part numbers. Here is a picture from the 2005 Toyota Catalogue. Here is a google translate:
The footrest is made of the same material as the vehicle seat skin so that you can take off your shoes and relax indoors. We are pursuing good tactile sensation and harmony with the room.
