19031163A is a 24 Vdc fan from Comair Rotron that has gone obsolete. 381-2331-ND from ebm-papst Inc. has been offered as a possible substitute.
To verify this part will work in your application or to view full specifications see the manufacturer datasheet. http://img.ebmpapst.com/products/datasheets/DC-axial-fan-8414N-ENU.pdf