I have no idea what its called. But it's the plastic curved piece that goes on the top of the back pillar and curves down to the back glass. Its just gap filler. Anyone know what im taking about. Truck is a 02 reg cab edge. E4 paint code. Color don't matter.

 

Inside or outside? On the inside it would be the B-pillar plastic I would think.

 

Outside. If ny internet was working I would post a picture. All I have is my phone

 

Hey man, dont forge your "Want to buy" prefix and your location in your thread title.
I fixed it for you.