I need Kia oil cooler part for my 1998 Kia Sportage 2.0
I called dealer but they want over $200. I called other places but
they dont sell after market, they directed me to the dealer. I want to
buy it online. Can someone send me some links to sites that sell this?

I am not sure if the exact part you are after is available online.
This is as close as i got:
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Kia--parts.com
Go to:
http://www.pickproparts.com/category.aspx?AAIA_VEHICLE_ID=1316043&AAIA_VEHICLE_NAME=1998%20KIA%20SPORTAGE
Choose "Belts and Cooling", and then select the part in the
subcategory menu.
Or, go to:
http://www.kia--parts.com/default.aspx?category=oil%20seal%20oil%20cooler&year=1998
Select year, then make of auto, and model etc
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http://www.partsamerica.com/PPF/SourceArea//PartGroupID/HEATAMS/Description/Heating+%26+Cooling/PartTypes.asp

Thanks a lot for your comments, but none of these links point to a
sale of oil cooler. Perhaps someone could tell me what the part number
is?