Technic Panel Curved 5 x 13 x 3 Tapered, Right #55

Reference

4446

Technic Panel Curved 5 x 13 x 3 Tapered, Right #55 (part 4446) is a LEGO element. It appears in 2 sets, including Koenigsegg Sadair's Spear Megacar and McLaren P1. It has been produced in 2 different colors.