Balboa Style 15" 4.0 kW Spa Heater w/Pressure Switch [2"x 15"] (58009) (G7416) plugs Use this part when the

Use this part when the original heater union nut is cracked

Lock rings secure major filter body components together and help preserve dependable assembly compression under pressure

temperature changes

It helps hold compatible tank sections securely together during normal filtration and service conditions

Balboa Style 15" 4.0 kW Spa Heater w/Pressure Switch [2"x 15"] (58009) (G7416) plugs Use this part when theA replacement heater can restore the dependable warmth and confidence that make a spa enjoyable to use, and this Balboa Style 15 inch 4. 0 kW Spa Heater is designed for compatible 2 inch by 15 inch applications with a pressure switch where the original heater has failed or become unreliable. When the heating side of the spa starts to underperform, a correctly matched heater is often the most important step in getting the system back to normal. The 4.