E36 Electric seat gear replacement

[Tanzeel36]

I bought these from here about two years back, worked perfectly and delivered in a week. https://www.amazon.com/gp/product/B00NF1Q2XK/ref=od_aui_detailpages00?ie=UTF8&psc=1

Sorry to bring up such and old thread but can you confirm for me how they worked. I need to do this job now and 7 years later we still don’t have any local options. 2 gears per seat right?