Roof drip rails keep rain off the top of the doors.
Panels
The drip rails (drip mouldings) are actually part of the Body Side panels, where the roof attaches to the side.
Also see Body Side Part Numbers
ASSY-FRONT PILLAR ASSY-RAIL ROOF SIDE OUTER PANEL-RAIL ROOF SIDE INNER
Removing
You need good door rubbers that seal real good -- the water runs off the side down the side windows instead of in the drain and then down the front or back. Just grind where the spot welds are inside the door opening. and the whole rail will come off. To regain strength, weld the roof skin to the car the full length.
Chrome Trim
All 1200s except Standard trim included chrome trim over the roof rain drip rails.
73800-H1801 SET-MOULDING ROOF DRIP RH COUPE 73801-H1801 SET-MOULDING ROOF DRIP LH COUPE
73800-H1100 SET-MOULDING ROOF DRIP SEDAN 4-DOOR * Only the rear piece differs from 4-dr to 2-dr 73800-H1300 SET-MOULDING ROOF DRIP SEDAN 2-DOOR
Also see Body Side Trim Part Numbers
SET-MOULDING ROOF DRIP RH SET-MOULDING ROOF DRIP LH
Each set consists of:
MOULDING-ROOF DRIP FRONT MOULDING-ROOF DRIP REAR CLIP-MOULDING ROOF DRIP [Center clip]
To install, place it on the top edge, then snap it down onto the bottom edge
Depress downward after hooking the top
To remove, pull bottom edge out, which will snap it off the rail.