Liftarm 1 x 3 with Connections for Hose 44079 and Rubber Bladder 41818

Reference

41817

Liftarm 1 x 3 with Connections for Hose 44079 and Rubber Bladder 41818 (part 41817) is a LEGO element. CollectORbuild's catalog records it in 1 set, including Downtown Fire Brigade.