What is this things purpose?

[baldilocks]

It sits beneath the front window run on both front doors. I think I don’t use it.

 

[mct75]

A guide to help you roll up the windows at speed, right?

 

[jfz80]

Oh man. This hs been brought up before actually but i cant remember the purpose.

Anti whistle when window cracked?
Guide for glass so it aligns when going up at speed?
Something silly like that.

 

[SUMMIT CRUISERS Jr]

What is this plastic piece on window for?

 

[baldilocks]

Thank you folks. I will leave them in place.

 

[gummycarbs]

I just read that thread and I don't buy it. I think it's there to squeeze the channel run and reduce window vibration. I've never, ever seen a window flop or bend outward when rolling it up.