There are 2 drawings for part 621990 available in AirCorps Library

Manufacturer's Drawing

Packard,   Packard V-1650 Merlin Drawings,   Page: --,   Revision: n/a  

CAP - COOLANT INLET “A” AND “B” UNIT PUMP TO CYLINDER ELBOW PIPE TO CRANKCASE BRACKET

Associated Aircraft:   V-1650  

Manufacturer's Drawing

Packard,   Packard V-1650 Merlin Drawings,   Page: --,   Revision: ff  

CAP - COOLANT INLET “A” AND “B” UNIT PUMP TO CYLINDER ELBOW PIPE TO CRANKCASE BRACKET

Associated Aircraft:   V-1650