Marathon Electric Motors is no longer manufacturing this motor, possible replacement is the following Marathon Electric Motors part#
U313A
** This motor has been replaced by Model# U313A**
M404, 2 Hp, 1800 Rpm, 145JM FR, 208-230/460 Vac, 3 PH, Totally Enclosed, C-Face Footed, Close-Coupled Pump, JM Series Motor, 145TTFR5338