Sherwood® 23975 major water pump repair kit, suitable for the following pumps: P171, P172, P176-02, P176X, P1710-02, P1710X, P1726, P1726X P1732-02, P1732X This kit contains:  Impeller 17000 O-ring 15945 Key 15948 Snap ring, small 15952 Bearings 15951 Seal & seat 15955 Washer Wear plate 24162 Cam 18271 Water pump cover 18742 Impeller specifications: Diameter: 3-1/4" ~ 82.55mm Width: 2-7/8" ~ 73.00mm Shaft: 20.00mm Blades: 12  Keyway: 3/16" ~  4.70mm (threaded) Material: Neoprene