Front window part help

[MooseStang]

It's some kind of stop located at the front edge.  Not sure what it's called or where to find replacement. 

 

[Don C]

It's part of what is called the window stop assembly

Door Glass - Window Stop - Upper - Used for 1971 Mercury Cougar, 1972 Mercury Cougar, 1973 Mercury Cougar, 1971 Ford Mustang, 1972 Ford Mustang, 1973 Ford Mustang at West Coast Classic Cougar :: The Definitive 1967 - 1973 Mercury Cougar Parts Source (cougarpartscatalog.com)

 

[OMS]

9.00 on ebay  

eBay item number:
133658718270
 
 or pm me

 

[Carolina_Mountain_Mustangs]

The 71 and 72 were bolted on but riveted on 73. BTW you can get the glass out without removing them I just took a set of Power Windows out of the doors on a 72 Mach 1 the other day. There is wide place in the door for them to come out through. Good time to clean all the window hardware and apply Lucas Oil Red N Tack #2 grease and you will be amazed at how better they work.

 

[Fordie]

Yes there's one on ebay or you like look here I bought original parts from them https://parts.levittownfordparts.com/ they might have the one you looking for hope this helps.