Waterway Impeller 3107440 2 HP full rated and 2.5 hp uprated, Mfg #: 310-7440, UPC Code: 806105232199, Stamped on face 313-4140R2. Stamped inside vanes 313-4180. Part number is not marked on the impeller. Part number may be on a brand new part on the back in ink which might wear off. Uses PS1000 Pump Seal or OEM 319-3100B Viton that replaced Seal 310-3110B, Champion 56 CHAMPE-120 2HP, Champion 56 CHAMPS-125 2.5HP, Champion 56 CHAMPE-225 2.5HP, Econo-Flo VSA ECONO-VSA Variable Speed, Impeller Diameter OD 4-7/8", Vane Width ID 5/16", Eye Diameter OD 2-3/16", Eye Length 9/16", Impeller Width OD 5/8", Seal Seat Depth 1-1/16", Shaft Diameter OD 5/8", Seal Seat Diameter OD 1-1/2", SVL56 High Pressure, Champion 56

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