Hello,
please advice me a part item #. Or where can i get replacement. Aftermarket fine.
2000 Dodge ram van 2500
driver seat bottom foam

 

I come up with 5103025AA, though it shows discontinued everywhere I look. I think your best bet is going to be on the used market. I don't think the foam itself differentiates between driver, or passenger side, so, if you could find a good used passenger seat, that would likely work as well.