I don`t exactly know what this black rubber u channel does. It obviously protects or seals the water tray to body just below the rear windo. Does anyone know where to purchase. I just spent 2 hrs on line looking. The channel measures 1/2 in tall. 1/4 thick and the slot is 1/16in.
If you don’t have the roll down rear window. The rubber goes around the glass seams at the top. Add some sealer around the opening and put the glass in place. Then put the garnish molding in place. Make sure you don’t stretch the rubber. I use super glue at the top seam. Hope this helps