I have a set for sale :
71511-35040 W/ O SPORT SEAT
The are shaped slightly different and were not the right set for my runner which has sport seats. The sport seat moves the bottom cushion up and down via the knob and and has the lumbar support. The cushions I have for sale do not have the holes in them for these two items.
Not much or fairly random availability of factory cushions.
http://www.toyota-4runner.org/sale-t...port-seat.html