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SpaBoss Cal-Rise is the easiest way to increase calcium hardness levels in your hot tub water. Protect your spa or hot tub and the many working parts within the plumbing and heating system by keeping the water chemistry correctly balanced at all times.

PR-Weir Door DSG

If all of the sudden, you find your spa's jet pumps, filters, jets, or water temperature stability begin to fail all at once, there's a good chance it may be due to the circuit board.

When you check out our online store, you'll find the Master Spas® 501X daughter pc board from Master Spas® and many other economical spa circuit boards. You can expect fast and free shipping options when you purchase this Momentum 80 circuit board replacement from the Master Spa Parts online store. 

When a spa's printed circuit board (PCB) fails it can mean the lights, pumps, safety shut-offs, filtering systems, or all of the above will not function as expected. With products such as the MS1700 Circuit Board V/N: 56157 and others for Michael Phelps swim spas, Master Spa Parts can have your spa up and running in no time.

Customers in the Lower 48 can also take advantage of our quick, complimentary shipping offer on this MS1700 circuit board replacement and others $99 and over.

Controlling your spa experience starts with keeping up with your spa's maintenance. The Grey, 2 Inch Diverter Handle by Master Spas is a replacement piece for your spa’s original diverter valve handle. This piece allows you to switch your diverter valve off and on, thus controlling the flow of water in your spa.

The 1 Inch Diverter Handle Black by Master Spas is a replacement handle for your home spa’s water diverter valve. Keeping your spa’s water diverter valves working properly allows you to have control over water flow in your spa. This piece is affordable, durable and simple to replace at home.

General use 5/16 SS Washer from Master Spa Parts. This unit goes underneath fasteners on your spa/hot tub to keep components of your propulsion system intact.

General use number 8 stainless steel screws to fix and fasten surfaces securely are available to you from Master Spa Parts.

3/8" x 1.5" Fender Washer used on the propulsion system in the swim spas. The 3/8" x 1.5" Fender Washer from Master Spa Parts has a thinner body compared to the flat washer and provides an even wider surface area of support for fasteners.

Designed specifically for preventing fasteners from coming loose after they are tightened, the ⅜’’ SS Split Lock Washer from Master Spa Parts is the perfect choice for fastening essential components of your spa.

Protect your speaker from excessive vibrations using the 80W Speaker Spider. The 100W Speaker Spider centers moving parts of the speaker allowing vibrations in an in and out motion instead of moving from side to side which can destroy your speakers.

This is a copper jumper strap normally used with the ground wires in the spa. These are mounted on the back of the pumps connecting the ground wire. Is part of the connections from the heater to the PC Board.