I have tracked my leak down to my rear cab vent.
- Does anyone know how to replace without moving the bed?
- Does anyone have the P/N for the vent?

Looks like this:

 

I believe the P/N is FL3Z-15280B62-A. Not sure how to remove and re-install.

 

looks correct, thanks!

Still need to figure out how to replace

 

What's the clearance between the wet side of the vent and the bed? (If you pushed the vent out the hole, wouldn't it just drop to the ground between the cab and the bed?) Because if your answer is yes...you're in business.

 

i pushed the old one out and could not figure out how to get it out from between the bed and the cab. to the driver side its to tight, above its too tight, below there is a rubber dam. i'm thinking i will need to remove that dam somehow. the only other option is to remove or loosen the bed which i do not want to deal with

 

So how did you accomplish this? I'm in the same boat. Thanks

 

I didn't. I found out it was leaking through the rear sliding window.

 

Might be easier to just RTV a sheet of rubber over the hole from the inside. Assuming you found a way to get the old one out from between the cab and bed.

All they do is provide a vent for air to escape when your wife slams the Ishtar out of your passenger door.