This is Soxa-Marine sea water pump Impeller Major Rebuild Kit for Yanmar marine engine cooling Pump.

Parts OEM Number
Water Pump Impeller 128991-42200 ，128990-42200 , old # X08810B
Pump End cover o-ring , X02173476 , old # X0506597
Slinger o-ring X02173432 , old # X0506513
Retaining ring X00370012 , old # X0534501
Retaining ring X00371732 , old # X0534511
Spacer plate X0145050
Bearing X03431760 , old # X0508124
Bearing X03431748 , old # X0508130
SS Screws X0504163 Replaces 128990-42520，X0504163 ， 0.0141.700
Lip seal X02233010 , old # X0529139
End cover X0142398 ， 128990-42540

NOTE:
The kit used on a 6 bolt cover with a 3" (76mm) diameter

Fit Pumps:
Yanmar Pumps: 128990-42500 , 128990-42510

Package Include:
Same as the picture shown
Yanmar Marine Engine Models Specifications:
2YM15
3YM20
3YM30

Impeller Information:
Diameter: 50.8mm (2")
Width: 22mm (0.87")
Shaft: 12mm (0.47")
6 Blades