The part number 58081 is a widely used Balboa Water Group 4.0kW heater assembly found in numerous hot tub brands that incorporate Balboa control systems.
The following manufacturers use or have used this specific part number in their spas:
Spa Manufacturers
Jacuzzi Hot Tubs: The 58081 is listed as a compatible replacement for some Jacuzzi J574 and J576 models.
Master Spas: This brand uses Balboa components and control systems in some of its hot tubs.
Cal Spas: Cal Spas frequently incorporates Balboa control systems and components.
Marquis Spas: Marquis is known for utilizing Balboa control systems in many of its hot tubs.
Bullfrog Spas: According to some sources, Bullfrog spas that use Balboa control systems can use this replacement part.
Coast Spas: This Canadian manufacturer often uses Balboa control systems in its products.
Platinum Spas By Superior Wellness: This company uses Balboa equipment and parts in its spas.
Strong Spas: The 58081 can be a replacement option for some Strong Spa heaters.
Dynasty Spas: Compatible with some Dynasty Spas models using the appropriate Balboa control system.
Part Manufacturers (OEM/Aftermarket)
Balboa Water Group: The original manufacturer of the 58081 heater assembly.
Hydro Quip: An aftermarket supplier that produces a compatible replacement part (part number 26-58081-K).
