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Fitment:

This heater is suitable for Balboa BP Series control systems, such as BP501G1, BP501G3, BP2000G1, BP7, as well as for Balboa VS Series and EL2001 Series control systems, such as VS501Z, VS510SZ, VS520SZ, and EL2001M3

Great Compatibility --- This heater can be a convenient substitution for a great deal of models, including:
26-58083-7S-KS, 26-0807-7S-KS, 2-00-0036C, C2550-0807-TPS,
46-138-1020, 740-0617, 740-0655, 2-00-0049,
25-250-0807, 25-200-8083
58121 (1. 5" Tailpiece), 58209, 58000, 58010 (825 Incoloy), 58123, 58089 (Incoloy), 58086, 58105, 58016, 55473,
58140, 58306 (Has BP Heater Cable), 55624 (Has Titanium Element), Master Spas X300713, 58016 (Marquis Spas)

Features:
1) This heater can be a convenient substitution for a great deal of models, including 26-58083-7S-KS, 26-0807-7S-KS, 2-00-0036C, C2550-0807-TPS, 58121 (1. 5" Tailpiece), 58209, 58000, 58010 (825 Incoloy), 58123, 58089 (Incoloy), 58086, 58105, 46-138-1020, 58016, 55473, 58140, 740-0617, 740-0655, 2-00-0049, 58306 (Has BP Heater Cable), 55624 (Has Titanium Element), Master Spas X300713, 58016 (Marquis Spas), 25-250-0807, 25-200-8083

2) The 58083 M-7 Heater Assembly can be used as a replacement heater for spas or hot tubs, featuring its own sensors, front-mounted design for user convenience, and easy servicing

3) Equipped with a 316 stainless steel heater housing and a 5.5KW Incoloy Flo-Thru heater element, it also supports Balboa OEM M7 dual sensors

4) Manifold Length: 15", Manifold Diameter: 2", Kilowatt Rating: 5.5KW / 1.375 KW, Voltage Rating: 240V / 120V

Package included:

1 heater, 1 pair of 2. 0" heater split nuts, 1 pair of 2. 0" heater tailpieces with o-ring gaskets