There are 2 drawings for part 621667 available in AirCorps Library

Manufacturer's Drawing

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

ELBOW - 90°-.4375-20 NF 3 THD X .125 NPT (.250 DIA FLARED TUBE.)

Associated Aircraft:   V-1650  

Manufacturer's Drawing

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

ELBOW - 90°-.4375-20 NF 3 THD X .125 NPT (.250 DIA FLARED TUBE.)

Associated Aircraft:   V-1650