Need to replace this on my '72 Supreme.

 

It's difficult to see what it is in the pic. Of course, I'm browsing the site today with my phone.

Is that the passenger's side of the engine bay where the fender meets the wheel well? It could be the HVAC box. Maybe someone else can tell from the pic.

 

Can't tell what "this" is from your itty bitty pic.

 

Blown up 300% I still can't make it out....bigger Dave, we need bigger.

 

Sorry guys..it's the corner piece for the inside weather stripping on the driver side..

 

Dave - I believe it is referred to as the "door jamb windlace"

 

I don't know for a fact what they're called, I've followed some other threads/discussions & I think that is possibly what they're called. You might wait until others can confirm for you. I found an image which "may" be correct...use at your own discretion. This one says Rear, there may be a Front...I'm drawing straws...good luck.

1970-1972 GM Cars Door Jamb Rear Windlace Black Coupe Convertible Pair

 

Here's another...I'm sorta confused on the name (as you can tell). None-the-less, perhaps it will assist in helping you address your needs - this one is called a Body Lock Pillar Windlace....

Body Lock Pillar Windlace Set / Door Jamb Windlace Set, black

 

GM calls that piece a weatherstrip blowout clip. Should be common to all A-body hardtop styles. Check with Fusick, Ames Performance Engineering or any of the Chevelle vendors.

 

https://www.trimparts.com/4579

 

Thanks for the link...got em ordered 👌

 

Yup, that's the blowout clip.

It is *not* essential. It does help keep the window from trying to flex open at highway speeds - so it's easy to tell if that's a problem or not on your car.

Getting them installed - and staying installed - is a real bear. They have little nubs that need to be melted to secure to the metal corner clip. One side keeps flying off on mine. It's easier with that clip removed, but you have to pull the weatherstrip channel which can be its own adventure.