Modernization kit for Taco 131, 132, 133, 138, 1602, 1604, 1612, 1614, 1620, 1622, 1624, 1630, 1632, and 1634 cast iron pumps with 56 frames that contains the pump coupler, seal kit, and bearing housing with cartridge and is designed to update old pumps to the new -9 and serial number pumps. A new impeller assembly is required when this update kit is installed.