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The 4.0kW Heater (V/N 55950) is a replacement part for selected models of the H2X Swim Spas (Momentum 80, H2X Momentum) and Michael Phelps Swim Spas (Momentum 80)

Easily installable so you can get back to enjoying your heated Swim spa and hot tub in no time at all.

The 3-inch poly planar shell speaker is perfect for small spaces or when space is at a premium. Enjoy crisp sound from your spa theater system. It is a 3-inch cone with metallic waterproof finish.

The 1.5 inch Pump O-Ring fits neatly into pump joints/parts that need to create a tight seal. Works with 2 inch nuts.

Get all the parts you need to fully assembly your replacement spa pump.

The 2 inch Pump O-Ring fits neatly into pump joints/parts that need to create a tight seal. Works with 2 inch nuts.

Get all the parts you need to fully assembly your replacement spa pump.

The 3.6 horsepower, 2 speed Sta-Rite / Pentair Pump is a replacement pump that goes with selected spa models. Don’t let a broken part spoil your fun. Order your replacement pump TODAY.

The 2 horsepower, 2 speed, 120V Aqua-Flo is a main pump used in 110V Master Spa hot tubs. It comes as one complete unit with a cord.

Don’t let a broken pump spoil your fun. Order a replacement part TODAY.

The sensor assembly is specifically designed to go with Down East Spas and Legend Series Master Spas (select 1996-1999 models). It is a replacement for Balboa Dual Sensor Assembly with Temperature and Hi-Limit Sensor. Compatible with all Balboa systems that use this type of sensor.

Play and enjoy music from your smartphone or mp3 player while lounging in your spa. This package comes with 1 Magnadyne Aquavibe MD150 AM/FM LED USB Bluetooth marine stereo.

Free shipping for customers in the contiguous 48 US for products over $99 !

Designed specifically for 2015 Michael Phelps Swim Spas this sensor is a replacement for the sensor in your spa’s heating system allowing you to control the heat of your spa from the external control panel. If you don’t see your model listed, it may still work – so please give our customer service a call!

Use this SilkBalance solution to clean your spa once a week. This SilkBalance water conditioner softens your water while neutralizing odors, all in seconds of using the product. Additionally, it protects your spa components to which make your spa experience the best it can be. 38oz bottle lasts two months.

Are you tired of paying too much for your Legacy Whirlpool® or Freedom filter? With our assortment of manufacturer-direct replacement spa filters, Master Spa Parts has a number of economically priced filters available to maintain the cleanliness and clarity of your hot tub. The filter shown has 40 square-feet of filtration action and is compatible with select models of Down East Spas, Freedom Spas, Legacy Whirlpool®, and Legend Series™ from Master Spas®. Buy three or more of the Legacy Whirlpool® replacement filter and get free shipping to the contiguous United States!

Dock your mp3 player or phone and enjoy your music selections from your Master Spa with the Fusion Deluxe Docking Station with Bluetooth. Waterproof top-of-the-line enclosure from Aquatic AV.