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Water Pump Housings & Cups (Tohatsu)

Lower Water Pump Case Assembly – 3H2-65040-1

Brand: Tohatsu

SKU: 3H2-65040-1

$75.60
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The Genuine Tohatsu Lower Water Pump Case Assembly 3H2-65040-1 is an OEM replacement component for selected Tohatsu 2HP to 3.5HP outboard motors. Located in the lower unit, this component supports the water pump assembly and helps maintain correct positioning of the pump components. Ideal for replacing worn, corroded or damaged lower pump cases, it helps restore reliable water pump operation and efficient engine cooling.

Key benefits

Key Benefits

  • - Genuine Tohatsu OEM replacement component.
  • - Designed for compatible factory water pump assemblies.
  • - Supports correct water pump component positioning.
  • - Helps maintain reliable cooling water circulation.
  • - Suitable for water pump rebuilding and lower unit repairs.
  • - Replaces worn, cracked or corroded lower pump cases.
  • - Manufactured for use with compatible Tohatsu outboard motors.

Compatible Outboard Motors

  • Tohatsu Conventional Two-Stroke
  • - M2.5A2 – 2.5HP
  • - M3.5A2 – 3.5HP
  • - M3.5B2 – 3.5HP
  • Tohatsu Four-Stroke
  • - MFS2A / MFS2B / MFS2C – 2HP
  • - MFS2.5A / MFS2.5B / MFS2.5C – 2.5HP
  • - MFS3.5A / MFS3.5B / MFS3.5C – 3.5HP

Cross-Reference & Superseded Part Numbers

  • Genuine Tohatsu References
  • - 3H2-65040-1 – Genuine lower water pump case assembly.
  • - 3H2650401M – Genuine Tohatsu ordering number.
  • - 3H2650401 – Unhyphenated reference.

Suitable Applications

  • - Lower water pump case replacement.
  • - Outboard water pump rebuilding.
  • - Lower unit cooling system repairs.
  • - Replacement of corroded or damaged pump cases.
  • - Water pump maintenance during impeller servicing.
  • - Restoration of original water pump component alignment.

Signs the Lower Water Pump Case Needs Replacing

  • - Cracked or broken pump case.
  • - Corrosion or pitting around sealing surfaces.
  • - Damaged or distorted mounting surfaces.
  • - Excessive wear around the impeller shaft opening.
  • - Water leakage caused by case damage.
  • - Reduced cooling water circulation associated with pump damage.
  • - Damage discovered during lower unit servicing.

Shipping

Ships Australia-wide