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Have you narrowed down your hot tub's issue to the circuit board? Are there visible scorch marks on the board? We can help! Master Spa Parts offers a number of OEM circuit board replacements, such as this MAS 425 Value Series™ Circuit Board V/N: 54161 from Master Spas®. Plus, when you purchase this MAS 425 spa circuit board replacement from Master Spa Parts, you can count on free shipping to all locations within the Continental United States.

ZorbO™, the hot tub and spa scum absorber can absorb up to 15 times its own weight — that’s a lot of body oil-, odor-, and lotion-removing potential in one little product. Keep your water crystal-clear with the Earth-friendly ingredients found in this hot tub and spa scum remover. You’ve tried the rest, now go with the best!

The Fusion Retrofit Kit to Deluxe is an iPod docking station for Master Spa models in the Twilight and Legend series starting in 2010.

Control your spa entertainment system using this waterproof unit. UV and Salt resistant Wired Stereo Remote is designed and built to withstand the harsh conditions that come with spa use.

Spa Ease non-dissolving Brominating Tablets reduce the chlorine odor in your spa and provide a great sanitizing solution.

Lower both the pH and alkalinity in your spa with Spa Ease pH/Alkalinity down

The 20 Amp, ABC20 Glass Fuse for H2X by Master Spas is a replacement fuse designed to go in your home spa’s PC board. It is important to keep the fuses in your spa’s PC board in good shape because they provide power to your spa and all of its features.

Raise both the pH and alkalinity in your Master Spa with Spa Ease pH/Alkalinity up.

A spa circuit board is the "brains" behind your spa, controlling jet flow, filtration systems, water temperature, as well as the unit's high-limit sensors. Master Spa Parts offers a number of replacement circuit boards.

Enjoy remote control access to your spa entertainment system with the EL Series IR Receiver.

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

Spas and hot tubs that operate with a failing circuit board put the whole works (and your safety) at risk. We can help bring back the enjoyment of your spa — order this MS501S circuit board replacement and receive free shipping to all addresses in the "Lower 48".