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Your cart is empty.SpaGuts 25-150-1205 Universal Flo-Thru Heater Element, 4.0kw, Titanium Heater element is made of Titanium, the most non-corrosive & longest-lasting metal, providing the best heat-to-water transfer, withstanding many water conditions including saltwater. Heater Elements are OEM Factory Replacement Parts assembled in the U.S.A. Listed for your safety at the USA and Canada Underwriters Lab. Approx. Dimension: 10-inch L x 1.37-inch W, normally housed in a 15-inch long (or at least 12-inch long) Flo-Thru heater metal tube with a 2.25-inch hole diameter (known as 2-inch heaters). Heater terminals should be more towards one side of the heater tube. Note: For 110V application, the 4.0 kw heater element outputs 1.0 kw (4.0 kw = 13648 BTU). This replacement heater element fits any spa controllers or spa packs that takes a universal hi-flo element including products made by Balboa, Gecko, Spa Builders, Hydro Quip, ACC, Acura Spas, Len Gorden, Coleman, Watkins, Dimension One, etc. This is also an optional replacement for these heaters: C2400-0304, C2400-1054, C2400-0535, C2400-0809, C2400-0321, C2400-0165, 20-00518, C2400-2315, C2400-0307, C2400-0002, C2400-0073, C2400C2550-2, C2400-0313N, C2400-0213N, C2400-0256, C2400-0056, C2400-0000, C2400-1227, C2400-1206, 25-150-1025, C2400-5000-2, 25-175-8104, 58104, 58271, 58173, C2450-0802ET, C2450-0802, HEP-00-00-0037835, HEP-00-00-00 or 73994 or C2400-C3330-1 or C2400-C3330-1A (Caldera Spas), C2450-0802, 58269, 25-250-2020, 25-175-8173, 25-250-1004, C2400-1206 (13in), HEA14100041, 20-00278-C, C2400-0309, C2400-5000-1, C2400-5000-2B, 58148, 55033, 55033-01, 55033-02, 55035, 55035-01, 58109, 102372 or 54598 (Coleman), 58117, 12-0102-K, 12-0102-G, BX5000CT, BX5000C, 47-555-2525, 47-555-2075, 58048, C2400-1004, C2400-1004TI-1, C2450-1004, B24040KX, C2400-1004TI, 25-175-8269, 25-175-8271, B24045G (4.5KW), 20-00422 (4.5KW), C2450-0521 (4.5KW).