This 1.5 Horse Power 39583-03 13.8/3.8 Amp (2) Speed 48 Frame Complete Pump is a Watkins Wavemaster LX Brand Pump. These pumps usually have the part number 39583-03 on the label for a Watkins Version. It is about 7 1/4"" across the face of the pump, it measures about 7 3/8" from the bottom to the top of the pressure side of the volute, it also measures 15" from the back to front edge. The Suction and Pressure side thread fittings are called 2" x 2" but measure 3" from the edge of the thread to the edge of the thread. 

This pump can have 3 different Bleeder Barbs they can be found at these links:

Bleeder Plug for Watkins LX Vendor Code 3536 Pump Face 48 or 56 Frame 1/4" Barb x 3/8"Mpt

Pump Bleeder Barb, Watkins, Wavemaster, LX, 1/2" Barb x 1/4"Mpt

Pump Bleeder Barb, Watkins, Wavemaster, XP2, XP2E, LX, 1/4" Barb x 1/4"Mpt

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 What We offer is the exact pump or the closest equivalent to the original pump if it is obsolete that they would buy and put their numbers on from the original pump manufacturers.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..

IMPORTANT MOTOR VARIATION NOTICE

Due to ongoing changes in the hot tub pump industry since COVID, motor appearance and configuration may vary, even when the part number is the same. While the pump wet end will be correct, the motor may differ in areas such as capacitor location, labeling, or housing.

If you have a specific motor requirement (clearance, capacitor position, orientation, etc.), you must contact us before ordering so we can verify availability. Do not order first and contact us after delivery due to appearance differences.

Motor variations are outside of our control and may change week to week. Appearance differences do not constitute an incorrect item if specifications are met.