Product review (3 stars): DO NOT BUY WITH DRAIN TUBE like Amazon wants you to.
Amazon tries to get you to buy this as part of a bundle with a drain tube to "save you money"... DON'T!
  The drain tube will fix the problem of your defroster backing up, and IT REPLACES THE GROMET.
  The grommets are prone to getting old, sticky, and plugging up. This new replacement will work fine but eventually it will fail.