![14.6v Internal Delco DR44 Slot Wound Regulator](http://customelectricservice.com/cdn/shop/files/image1_{width}x.jpg?v=1710438509)
4 pin GM regulator for DR44 and DR37 alternators. great upgrade / modification / replacement for companies that use 13.8v set point regulators in their slot wound alternators.
These are for DR44 units that have the vertical P terminal on the rectifier with a pressed / stamped rectifier into the back frame.
if you do not know the difference please call for more information.