Balboa VS501z Hot Tub Heater – VS501 Spa Pack- PN# 54356-03. Includes main unit with heater and circuit board. Also includes top side controller. I will include the wiring for the one pump I have. The item “Balboa VS501z Hot Tub Heater VS501 Spa Pack- PN# 54356-03″ is in sale since Tuesday, December 31, 2019. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Spas & Hot Tubs”. The seller is “s9tim” and is located in Daytona Beach, Florida. This item can be shipped to United States.