Product review (4 stars): Easy install, might melt your plastic.
Spending about a half hour to buy and install this saved me a few hundred dollars.  it works well, but almost TOO well, as I did notice that tupperware I put on the bottom rack tended to melt now and then.  I put all the plastic on the top rack now and I'm fine.

There are plenty of videos on YouTube for installing this specific element, so I highly suggest you give it a shot and save some money.