Waterway Impeller 3103990 3/4hp full rate 1hp uprated. For Hi-Flo Pump Old Style prior to 2014, Mfg #: 310-3990, UPC Code: 806105063168, This impeller has an extended inlet opening. At the shaft side there is a small raised ring around the shaft, The small raised ring is 7/16" Tall and has and outside diameter of 1-9/16", Also has a small ridge around the outside diameter of the impelloer on the shaft side, Number of Vanes: 6, Diameter Outside: 3-5/8", Open Vane Thickness: 1/4", Overall Thickness: 11/16", Front to Back: 3-3/16", (From end of shaft to front of intake), Inlet Diameter Inside: 1-1/2", Inlet Diameter Outside: 1-7/8", Inlet Length : 1", Markings: ASSY 310-4000-C 1 HP, 310-3990-B 3/4 HP, 310-3980-A 1/2 HP , 313-1520 SIDE DISH COVER is molded on the inlet side, Use Pump Shaft Seal PS-1000

Eligible for Same Day - In Store Pick Up or Curbside Pickup

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