Replacement Complete Pump
This pump is very common on Spaform Spas but unfortunately, Marlow discontinued it several years ago and replaced the hot tub pump with a Hydo-Air HA440 spa pump, which has different size connections and doesn't fit directly.
This hot tub pump fits the existing 1.5" x 1.5" connections perfectly, using a combination of a similar wet end and new motor.
Wet end union connections - Fits 1.5" unions on the outside thread and a 1.5" threaded nipple on the inside thread.
See the photos for the similarities.
Please note: This hot tub pump comes with no cable so you will have to re-use your existing cable. (Unions to be purchased separately)