3721621-13 Waterway Spa Pump 2-speed, 230V, 12.0/4.4A 4hp Executive 56 frame Spa Pump, 6.5" diameter motor, 2" SD/ 2.5"CS. with 2.5" inlet for 2-1/2" PVC pipe size. 2.5" Inlet threads measure 3.7" outside diameter, and the 2" Discharge measures 3.1" outside diameter. Note: the intake threaded connection is different than the discharge threads, they are different sizes. Inlet threads are 3.7" outside diameter, see photo. Discharge threads are 3.1" OD, see photo.
High performance Water Way Hot Tub Pump, very strong split capacitor design, double shielded ball bearings. Viton Seals. Overall length=17" Rated 4.0HP 372162113 P240E5252024. Note: ships as shown, no spa control cord, you must re-use your present spa control power cord.,
Can be marked: Executive 56, 3721621-0385V, 3721621-0311VC, 3721621-0385B, Massage Master, 3E21821-6310
Can be labelled by one of these 'model numbers', which do not completely define the product like a part number does: PF-40-2N22M, PF-40-2N22MC, PF-30-2N22C, PF-30-2N22M, PF-30-2N22MC, PF-45-2N22E, PF-35-2N22C, PF302N22C, PF-50-2N22C,
PF402N22M, and if you go by the model number, please carefully verify
your motor amps rating and the outside diameter of your intake and
discharge threads. Any doubts, please email us a few photos and we will
help verify for you. email to: firstname.lastname@example.org