This part is a 5.5KW Titanium Heater Element.  This Heater Element features the bend in the back of the element needed to fit the Balboa M-7 heater tubes.

This also fits Gecko, ACC, Spa Guts, Spa Builders Len Gordon, Brett Aqualine, Hydroquip and most other standard 15" Hot Tub Heater Tubes. 

We also offer this Titanium Element with a Silicon Seal kit in our eBay store.

Note: When testing this heater if it trips the breaker simply unplug it and if the breaker stays on plug back in and if it trips this heater is the cause if it is not a breaker trip issue then measure between the two terminals with an Ohm meter it should measure about 14.5K ohms. If it measures 0K it is open. If it is not tripping the breaker and doesn't measure open then the heater is not bad look for other issues that cause no heat Like a Pressure Switch, Stopped up filter, No water movement, Open circuit on board etc…..

For videos related to how to diagnose the element for a breaker trip search YouTube for: GFCI Breaker Trip Diagnosis Heater Replacement Hot Tub How To Spa Guy