Webpart, no, but one could be created. It's easy to do if it was on the same Kentico installation but since it's on another you will need to create a custom web part that will make a web request off the page, probably need to use the code below to get the content then use the HTML agility pack in c# to select the right spot and populate an aspx literal with the content.
using (WebClient client = new WebClient())
string htmlCode = client.DownloadString("http://somesite.com/default.html");
And an example of agility pack