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Without the circuit board, your spa or hot tub will simply lose the ability to carry out a number of functions. Lights, jets, filtration system, and other essential features may even all fail at once. Master Spa Parts online store carries a number of circuit boards - all competitively priced, such as this MS501X Pc Board from master Spas and others to get your hot tub back up and running. 

The Master Spa Parts warehouse can help you to easily replace your MS501X circuit board. We also have many other economic-minded spa replacement parts. Get free, fast shipping when you order this product from Master Spa Parts today! 

UV light for ozone

Spa Aqua Comb makes cleaning spa filters a breeze! Designed for shallow pleated cartridge filters, the Spa Aqua Comb is used in most spas and swim spas.

6PT Spyder LED harness with boots

SpaBoss No Phos is phosphate control for your spa – a naturally formulated additive that helps to remove phosphates from your spa water – keeping it clean and clear! (16 oz. bottle)

Proline Jet Line Cleaner clears your hot tub jets of all unwanted organics, oils, residue, dirt, minerals and biofilm. It's a great way to keep your hot tub jets clean, clear, and working properly!

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.

Replacement support arm for the CoverMate I Eco B and the inner support arm for the CoverMate Freestyle.

The heater gasket o-ring is a replacement part for the o-rings that come with your spa and support the heater gasket so that there is a tight fit. If you don’t see your model listed, it may still work – so please give our customer service a call!

Filter Cover Black

Jet Body

Euro directional stainless steel and pismo blue jet.