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Water Pump Impellers (Tohatsu)

Water Pump Impeller 3NV-65021-0

Brand: Tohatsu

SKU: 3NV-65021-0

$24.65
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The Genuine Tohatsu 3NV-65021-0 Water Pump Impeller is designed for selected 25HP and 30HP 4-stroke outboard motors. Manufactured to original equipment specifications, it circulates cooling water through the engine to help maintain correct operating temperatures. Ideal for routine servicing, water pump repairs and replacing worn or damaged impellers, this genuine OEM component supports reliable cooling performance and helps reduce the risk of engine overheating.

Key benefits

Key Benefits

  • - Genuine Tohatsu OEM replacement impeller.
  • - Designed for selected MFS25 and MFS30 4-stroke outboards.
  • - Helps maintain consistent engine cooling-water circulation.
  • - Manufactured for the corresponding factory water pump assembly.
  • - Suitable for routine servicing and preventative maintenance.
  • - Helps protect against overheating caused by impeller deterioration.
  • - Direct replacement for the specified original impeller.
  • - Included in selected genuine Tohatsu water pump repair kits.

Specifications & Dimensions

  • - Manufacturer: Tohatsu
  • - OEM Part Number: 3NV-65021-0
  • - OEM Ordering Number: 3NV650210M
  • - Product Type: Water Pump Impeller
  • - Outside Diameter: 45 mm (1.772")
  • - Impeller Width / Height: 20 mm (0.787")
  • - Shaft / Internal Diameter: 17 mm (0.669")
  • - Number of Blades: 6
  • - Drive Type: Key drive
  • - Material: Flexible rubber with centre hub
  • - Engine Type: 4-stroke
  • - Installation Location: Outboard lower-unit water pump

Compatible Tohatsu Outboards

  • 4-Stroke – MFS25 Series
  • - MFS25C – 25HP: Serial number 002720AH onwards, according to supplier fitment information.
  • - MFS25D – 25HP: Listed in the factory water pump assembly.
  • 4-Stroke – MFS30 Series
  • - MFS30C – 30HP: Serial number 002720AH onwards, according to supplier fitment information.
  • - MFS30D – 30HP: Listed in the factory water pump assembly.
  • Important: Earlier MFS25C and MFS30C engines may use a different water pump configuration. Confirm the engine serial number and original impeller before ordering.

Cross-Reference & Replacement Part Numbers

  • Genuine Tohatsu OEM
  • - 3NV-65021-0 – Genuine water pump impeller.
  • - 3NV650210M – OEM ordering number.
  • Signs the Water Pump Impeller Needs Replacing
  • - Weak or intermittent cooling-water tell-tale stream.
  • - Engine overheating or temperature warnings.
  • - Cracked, split or missing impeller blades.
  • - Hardened or deteriorated rubber.
  • - Permanently deformed impeller blades.
  • - Damage caused by dry running.
  • - Excessive wear from sand or debris.
  • - Reduced water pump efficiency.
  • - Scheduled water pump maintenance is due.

Important Fitment Information

  • - Confirm the outboard model and serial number before ordering.
  • - This is a genuine Tohatsu OEM impeller, not an aftermarket replacement.
  • - Check the original impeller dimensions before installation.
  • - Not every MFS25 or MFS30 outboard uses this impeller.
  • - Inspect the water pump housing, liner, guide plate and gaskets during servicing.
  • - Replace damaged or worn associated components.
  • - Ensure the impeller drive key is correctly installed.
  • - Follow the manufacturer's water pump assembly instructions.
  • - Never operate the engine without an adequate cooling-water supply.

Shipping

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