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) .
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