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The 78" x 66" Hot Tub Cover (Long-edge Fold) is an exact Master Spa Factory OEM replacement. It is specifically designed to fit your Master Spas® hot tub. This cover is extremely energy efficient, as it's made of a 1.5-pound foam density, six-inch thick foam insulation (which tapers to 4-inches along the sides), and a full-length heat seal. It has been upgraded to include two rubber grip handles and is made of a high quality marine-grade vinyl covering that is mildew treated.

Note: This particular cover folds along the longer 78" edge. If you need a cover with these same dimensions (66" x 78") but that folds along the short edge, try our 66 × 78 Inch Hot Tub Cover (Short-edge fold).

The 1.5 x 2 inch Pump Adapter tailpiece is a pump assembly part commonly used to create a tight seal between pump parts along with the O-ring.

Make sure to buy all the parts you need for complete assembly of your replacement pump.

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 66" x 78" Master Spas® factory direct OEM replacement hot tub cover (SKU: 66x78) is designed to fit your Master Spas hot tub. It comes standard with a 1.5lb foam density, long steam stopper cushions to help prevent any sort of heat loss. It has been upgraded to include two rubber grip handles and is made of a high quality marine-grade vinyl covering that is mildew treated and unfazed by UV rays.

Note: This particular cover folds along the short edge. If you need a cover with these same dimensions (66" x 78") but that folds along the long edge, try our 66 × 78 Inch Hot Tub Cover (Long-edge fold).

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.

The 8' x 19' replacement cover (94" x 231") is designed to fit your Master Spas® H2X swim spas and Michael Phelps swim spas. This replacement spa cover (SKU: Cover 19) is a 4-piece cover that comes in 18 different color options. Both styles offer heat seam pillows that prevent heat loss through the seams of your spa and upgraded rubber grip handles.

The 1.5 inch Pump Split Nut is a replacement part for your pump union that needs to be re-plumbed.

Need to replacement your entire pump unit ? Don’t forget to buy all the parts you need to fully assemble the pump.

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.