What are these?

What are this plastic pieces that are under the passenger side valve cover that clips into the cover. These are on 5.3 heads. This is also where the hoses go into on the same side valve cover. There are two of them. Im asking this because i got my valve covers powdercoated and as i was installing these back i noticed there was a crack on where it clips in. What is the purpose to these? Do i need to replace it? PN? If i put it in there now it doesnt stay and i do not want them clacking around on my rockers and springs.
Trending Topics
The Best V8 Stories One Small Block at Time



