Cal Spa M7 Original Style Heater XL 5.5kw 240V Centered - 2003+

This part is a Cal Spa Original M7 Style 5.5KW Heater Complete Assembly includes Tube, Element Split nuts and Gaskets. This unit features a 5.5Kw Element, Tube with (2) Split Nuts and gaskets. This heater replaces the heater inside of the bottom of a Cal Spa Pack with the white insulation around it and the two sensors on each end that are pull tied onto the tube and plugged into the board because the element is welded to the tube.. That style has the heater element on the outside of the tube this style has the tube inside of the tube that is why this one has the M7 sensors inside the tube and not pull tied on..

See the second picture for what the original heater that this replaces looks like..

NOTE: You will reuse your original Stick on Style M7 sensors with this heater..

If you want to change to the Standard style heater with an in water style Element and Standard style m7 sensors included like other brands you can click here for that heater.. Standard Cal Spa Retrofit Heater Upgrade..

 If you need the stick on style M7 Sensor that would be used in this application click this link: Cal Spa, Hot Tub, Heater, M7, Sensor, Replacement, Temp, Hi Limit, Foam, 12"

This heater is compatible with Balboa control systems with the following numbers:

53267,53267-01,53267-02,53527,53527-01,53527-02,53600,53600-01,53600-02,53602,53602-01,53603,53603-01,53608,53608-01,53608-02,53619,53649,53752,53752-01,53752-02,53787,53957,53957-01,53986,53986-01,53988,53988-01,54200,54200-01,54202,54291,54291-01,54291-02,54293,54293-01,54293-02,54337,54337-01,54337-02,54344,54350,54350-01,54352,54354,54356,54356-01,54356-02,54360,54366,54368,54368-01,54368-02,54371,54371-01,54371-02,54377,54377-01,54377-02,54380,54380-01,54380-02,54384-02,54390-02,54478,54478-01,54478-02,54491,54491-01,54491-02,54493,54585,54587,54603,54603-01,54635,54635-01,54637,54637-01,54639,54639-01,54645,54645-01,54661,54661-01,54707,54756,54762,54762-01,55023-01,55023-02,55056,55056-01,55056-02,55065,55065-01,55065-02,55066,55066-01,55066-02,55067,55067-01,55067-02,55068,55068-01,55068-02,55069,55069-01,55069-02,55100,55100-01,55173,55173-01,55178,55178-01,55178-02,55210,55227,55236,55240,55240-01,55257,55338,55363,55366,55371,55371-01,55373,55373-01,55375,55375-01,55476,55483,55488,55492,55501,55515,55515-01,55601,55636,55646,55664,55666,55695,55736,55736-01,55736-02,55796,55797,55811,55813,55833,55839,55839-01,55839-02,55848,55860,55944,55958,55958-01,56007,56007-01,56008,56008-01,56009,56016,56016-01,56018,56019,56020,56021,56056,56070,56075,56075-01,56075-02,56076,56134,56142,56150,56156,56174,56183,56185,56216,56216-01,56229,56230,59004,59004-01,59004-02,