• Free shipping

  • Free help & advice

  • 30 Days returns

  • Available 7 days a week

24% off

Sea Water Pump Repair Kit for Yanmar Marine 3GM 3GMF 3GM30F With 70mm OD Gasket

Sale price $49.50 USD Regular price $65.00

Sea Water Pump Repair Kit for Yanmar Marine 3GM 3GMF 3GM30F With 70mm OD Gasket is backordered and will ship as soon as it is back in stock.

If you are unsure whether this product is compatible with your specific engine model, please feel free to contact our technical specialists at info@soxa-marine.com.

Our team will review your inquiry and respond within 48 hours.

OEM Part Numbers:

Component OEM Number
Impellers 128296-42070 124223-42091 124223-42092
Gasket 124223-42110
Bearings (2) 24107-062024
Lip Seal 124223-42080
Slinger 124223-42070
Retaining Rings 22242-000150 22252-000350
Cover Screws (6) 26203-04088
Key 124223-42040
Cam 124323-42100
Cam Screws / Washers Included

Compatibility:

  • Yanmar Models:
    • 2QM, 2QM20, 2QM20Y
    • 3QM, 3QM30, 3QM30Y
    • 3GM, 3GMF, 3GMFLE, 3GMFY-E, 3GMFYE-E, 3GMFYE-HE, 3GM30F, 3GM30FVE
    • 2GMF, 3GMF, 3GMDF (1980-83)
    • 2GM20F, 3GM30F (1983-2005, freshwater cooled with antifreeze, made in Japan)
    • 3HM, 3HMF (1980-83)
    • 3HM35, 3HM35F (1983-1992)
  • Pump Models:
    • 724770-42700
    • 724770-42701
    • 724770-42702
    • 121575-42000
    • 721575-42700
    • 721575-42701
    • 721575-42702

Note: This kit does not fit larger pumps with a 12-blade impeller and a cover diameter of 3.42" (87mm). It is compatible only with pumps having a 2-3/4" (70mm) cover diameter and a 6-blade impeller.


Impeller Specifications:

  • Diameter: 50.8mm (2")
  • Width: 22.1mm (7/8")
  • Shaft: 12.7mm (1/2")
  • Blades: 6

Package Includes:

  • All listed OEM parts
  • Cam screws and washers
  • Cover screws
  • Retaining rings
  • Gasket
  • Bearings
  • Lip seal
  • Slinger
  • Key

Visual reference available in product images.


Additional Information:

  • Pump Sizes:
    • Small Pump: 2-3/4" (70mm) cover diameter with a 6-blade impeller.
    • Large Pump: 3.42" (87mm) cover diameter with a 12-blade impeller.
  • Versions Available:
    • Flat cover (short shaft)
    • Raised cover (extended shaft)
    • Dual impeller (bilge pump with extended shaft)
  • Repair Kit Variants: 6 different kits based on pump size and version.

Assistance: If you are unsure about the correct kit, please send a photo of your pump along with any additional information. We will provide a link to the appropriate kit.


Yanmar Marine Engine Serial Number Note: This kit is not compatible with 1997 and later European-made models (serial numbers starting with "E").


Feel free to reach out if you have any questions or need further assistance with selecting the right rebuild kit for your Yanmar marine engine cooling pump.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.