Marquis Spa 4kW Heater 740-0650

Marquis Spa Heater, 4.0Kw, 2 Inch Plumbing, Measures 15 Inches Long (Tube).

Includes the two built in sensors. Ships as latest 4kw M7 heater with 2 sensors included.  Now includes heater tailpieces and gaskets, and the new model also includes 2x heater to board jumper straps, use or discard as needed.

2.25” is what manufacturers call standard 2" which can be confusing to some, but it is the same heater for connection to 2 inch plumbing. (there is no such thing as 2.25" hot tub plumbing fyi)
The only real difference is the top stud does not exist on the replacement.  If installer needs the stud, then can go with the OEM G7412

Used In The Following Spas:

2005 Quest, Spirt, 636, 530, 415, 315, and Hideaway. 2006; Quest, Ult 630, Ult 530, Ult 418, Ult 315, 630, 530, 418, 315, Retreat, and Rendezvous. 2007; Quest, 641R, 520M, 744E, 319S, Ult 630, Ult 530, Ult 418, Ult 315, 630, 530, 418, 315, Retreat, Rendezvous, And Envy/Envy 2. 2008 (Discovery Collection); Epic and Destiny. 2008 (Discovery And Signature Collection); Euphoria, Reward, Resort, Quest, Promise, Spirit, Mirage, Retreat, Rendezvous, And Envy. 2008 (Ultimate Collection); Euphoria, Reward, And Resort. Comes with 2 Tail Pieces And 2 Gaskets.

Shipping newest/latest model 4kW M7 230v heater.