What is this?

[Kygreen10]

A black hockey puck looking thing on the top of my Passport was damaged. It’s near the rear of the couch. What is this and what does it do? Easy to replace?

[chuckster57]

Welcome to the forum!!

Looks like a plumbing vent cap. Easy to replace, common part at most any RV parts place.

[GaryUT]

Originally Posted by Kygreen10

A black hockey puck looking thing on the top of my Passport was damaged. It’s near the rear of the couch. What is this and what does it do? Easy to replace?

If you pull the chunk of silicone off the top there will be a screw that holds the top on. If that's all that was damaged just put a new one on.

[flybouy]

If you blow up the picture it has "pull to remove" embossed on it. You get a replacement at any rv parts counter as previously stated or on line.