I've seen the same thing with the Toyota 2.5L I4 used in the RAV4 and Camry. It's simply a plastic tee and you can often get a metal replacement at auto part stores. Simple to replace if you can get to it. Here's a replacement from Advance Auto--I don't know if it's the correct size:
A forum community dedicated to Chevy Volt electric car owners and enthusiasts. Come join the discussion about hybrid performance, modifications, classifieds, troubleshooting, maintenance, reviews, and more!