Baldor Electric Motors is no longer manufacturing this motor, possible replacement is the following Baldor Electric Motors part#
EJMM3158T-5
**** This motor has been replaced by model # EJMM3158T-5 ****
JMM3158T-5, 3 Hp, 3600 Rpm, 145JM FR, 575 Vac, 3 PH, ODP,Foot Mounted, Close-Coupled Pump Motor