Hah, yeah it is! Though I didn't take mine off on purpose! I'm not sure how it broke, but I think it may have happened when I was changing the rear wiper in a real hurry. Like at a stop sign. Don't ask, it was a weird day. I'm hoping I can repair it instead of replace it. I'm thinking if I can get Krazy Glue to hold it in place long enough, but without sealing the hole inside, and then cover the whole shebang with silicone, I might be ok. Got a quote for $75 for a replacement! I can do better than that.