Brick Special 2 x 4 with Wheel Holder Old, Opaque Bottom

Reference

7049a

BrickLink® #

7049c01

Brick Special 2 x 4 with Wheel Holder Old, Opaque Bottom (part 7049a) is a LEGO element. CollectORbuild's catalog records it in 21 sets, including Aeroplane and European Taxi.