This pump is a Watkins Vendor Code # 3861 Sta-Rite Relia Flo 2'X 2" Side Discharge 48Fr 230V 2.5HP Pump Complete..

Watkins Hot Tubs have many brand names: Hotspring, Caldera, Tiger River, Hot Spot

NOTE about Watkins Wavemaster Complete Pumps: Watkins Does Not Make Pumps. They buy different brands of pumps and put their numbers on them.. If you want the original Watkins numbers on your new pump we don't offer that.. What We offer is the exact pump or the closest equivalent to the original pump if it is obsolete that they would buy and put their numbers on from the original pump manufacturers. The main difference between one you would buy from them now and ours is the exhaust vent in the back will not come on our pump.. We think it is a bad idea as it does not allow the motor to cool as it was intended to cool and does not have any redeeming quality for you as an end user.. See the below picture for what will NOT come on our pump.. If you must have that feature Watkins is the only source..  

Note: If your original Pump has this on the back with a hose attached none of my pumps will have that nor will they be able to accept this part from your old pump.. You will save 100's of dollars over the original pump with that attachment that is only used to put heat from the motor under the tub and I believe the motors stay cooler without that device and last longer..