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Water pump repair kit for Yanmar 2GM 3GM inc: 104211-42070 for pump 128270-42000
Water pump repair kit for Yanmar 2GM 3GM inc: 104211-42070 for pump 128270-42000 Water pump repair kit for Yanmar 2GM 3GM inc: 104211-42070 for pump 128270-42000 Water pump repair kit for Yanmar 2GM 3GM inc: 104211-42070 for pump 128270-42000 Water pump repair kit for Yanmar 2GM 3GM inc: 104211-42070 for pump 128270-42000

Water pump repair kit for Yanmar 2GM 3GM inc: 104211-42070 for pump 128270-42000

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High-quality marine engine spare parts. 

PoseidonMarine® Water pump repair kit for  Yanmar:

  • 2GM , 3GM , 3GMD , 1980-83
  • 2GM20 , 3GM30, 83-05 raw water cooled (no antifreeze), made in Japan.
  • 2QM15 , 1977-80
  • SB8 SB12
  • YSB8 YSB12

For pumps with 58mm (2 1/4") water pump cover

Will not fit 1997 and later European made. (E prefix before serial number on the European models)

Will not fit fresh water cooled engines (engines with radiator/heat exchanger)


Available both Major (With Impeller) and minor (Without Impeller)

Known pumps: 128270-42000 , 128270-42001 , 128270-42002 , 728270-42000 , 728270-42001 , 728270-42002

This repair kit consists of the following parts:

  • Impeller kit: 104211-42070 104211-42071  (ONLY MAJOR)
  • Gasket: 104211-42090
  • Bearings: 24107-062004
  • Seal S.S. spring: 104211-42100
  • Spacer S.S.: 104211-42130
  • Snapring, bearing retainer: 22252-000300
  • Bolts S.S.: 26554-040082

Buy this kit if:

  1. Your impeller dimensions (Dshaft X Dexternal X Height) are (9.54 X 39.60 X 18.94)mm
  2. Your pump cover measures exactly 58mm (2 1/4"). Otherwise not correct part for you.
  3. The impeller secures onto the shaft with a pin that passes through the impeller.
  4. Your engine is not equipped with heat exchanger (radiator)

Disclaimer: Quality is synonymous with PoseidonMarine, and we are committed to ensuring that the bearings included in this kit are far from substandard imitations. We exclusively utilize high-quality bearings recognized by the World Bearing Association (WBA), such as KOYO, SKF, NACHI, NTN etc. This meticulous selection demonstrates our respect for your valuable time, which you will dedicate to repairing this pump. By choosing our products, you can rest assured that your investment will yield long-lasting results, minimizing the need for frequent repairs.

The references that are listed here are trademarks that apply to the respective trademark owners. The references are used only for a reference purpose. Our product is compatible with these reference numbers. Please note that our product is an aftermarket product (non-OEM), unless otherwise stated.