Has intermittent squeal which is high-pitched. Just started about 3 loads ago.
Is there a certain part to order?

Two common things on your dryer will cause a squeak. The most common thing is worn out front drum support glides. A lot of times the glide get worn through and then the dryer drum starts to ride on the plastic housing which causes a squeak. The other common thing would be the rear drum bearing.

This is what the glides look like on your dryer, it uses two green ones and two white ones.
http://www.partsdr.com/photos/regular/WE1M481.JPG