Grundfos 59896291 1" Barb 115-Volt Spa Circulating Pump Sku: GRU-59896291-HZ91 This is a brand new part comes with a full manufacturer warranty!!! This sale transaction is for only this part number: 59896291. This pump is energy efficient and costs only pennies per day to operate. Its absolutely quiet, almost silent operation will assure your customer`s satisfaction. The newer pump has been completely redesigned with an ingenious rotating volute allowing installation in all plumbing configurations. Grundfos makes only this pump for the spa industry. It has a 1" barbed fitting which most Sundance used a glue in or 3/4" barbed fitting. You must adapt the plumbing to work on the spa or if your spa used a 3/4" barbed. you can use the 6500-460, E10-NSHN1W-19 Laing Pump, but would need to change positon of the base of the pump to adapt the plumbing. There is no straight across exchange out for the old pump. TERMS OF SALE: If, after receiving this item you discover that it was not the one you wanted, simply return it for a full refund within 14 days. You will have to pay for the return shipping charges. Refund is void if you have installed, used or damaged the item in any way. Item must be returned with its original box, packing materials and instructions. Payment via PayPal must be received within 3 days of transaction and prior to shipping. SHIPPING: Shipping charge will be based upon location. Please use the shipping calculator or request a shipping quote. International buyers: Customs fees, duties, taxes, tariffs other fees are your responsibility. Arrival time will depend on your location. If you have any questions, feel free to ask. Thank you for visiting!