Constanta, Romania
S.N.T.F.C. ,,C.F.R. Calatori" S.A.
41-0313-1
This is the pump for the flange lubircation system. It is actioned by the axle.

More pictures with class 41 locomotives.
Photo by Dr2005 - transportbucuresti.trei(a)gmail.com, www.transport-in-comun.ro/trenuri.