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Water Pump Impellers (Tohatsu)

Water Pump Impeller - 334-65021-0

Brand: Tohatsu

SKU: 334-65021-0

$28.90
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The Genuine Tohatsu Water Pump Impeller 334-65021-0 is an original equipment replacement designed for selected Tohatsu 9.9HP to 20HP two-stroke and four-stroke outboards. Featuring eight flexible rubber blades, this impeller circulates cooling water through the engine to help maintain correct operating temperature. Ideal for scheduled servicing and water pump repairs, it provides a genuine replacement for worn, cracked or damaged impellers, helping protect against overheating.

Key benefits

Key Benefits

  • - Genuine Tohatsu OEM replacement impeller.
  • - Eight flexible rubber blades for effective cooling-water circulation.
  • - Suitable for selected 9.9HP–20HP outboards, with additional older applications.
  • - Designed for the original factory water pump assembly.
  • - Helps reduce the risk of overheating.
  • - Suitable for freshwater and saltwater applications.
  • - Ideal for routine servicing and water pump rebuilding.

Specifications & Dimensions

  • - Manufacturer: Tohatsu
  • - OEM Part Number: 334-65021-0
  • - Ordering Reference: 334650210M
  • - Product Type: Water pump impeller
  • - Outside Diameter: 40.7 mm (1.602 in)
  • - Inside Diameter: 13.9 mm (0.547 in)
  • - Overall Height: 22.3 mm (0.878 in)
  • - Number of Blades: 8
  • - Drive Type: Key drive
  • - Material: Flexible marine-grade rubber

Compatible Tohatsu Outboard Motors

  • 2-Stroke Outboards
  • - M9.9B2 – 9.9HP
  • - M9.9C – 9.9HP
  • - M9.9D2 – 9.9HP
  • - M12C2 – 12HP
  • - M15B2 – 15HP
  • - M15C – 15HP
  • - M15D2 – 15HP
  • - M18C2 – 18HP
  • - M18D – 18HP
  • - M18E2 – 18HP
  • - MX18E2 – 18HP
  • - M25A2 – 25HP, selected older configurations
  • 4-Stroke Outboards
  • - MFS9.9B – 9.9HP
  • - MFS9.9B2 – 9.9HP
  • - MFS9.9C – 9.9HP
  • - MFS15B – 15HP
  • - MFS15B2 – 15HP
  • - MFS15C – 15HP
  • - MFS18B – 18HP
  • - MFS18B2 – 18HP
  • - MFS20C – 20HP
  • - MFS20D – 20HP

Compatible Mercury & Mariner Outboards

  • - Mercury 9.9HP – selected models
  • - Mercury 15HP – selected models
  • - Mercury 18HP – selected models
  • - Mercury 20HP – selected models
  • - Mariner 9.9HP – selected models
  • - Mariner 15HP – selected models
  • - Mariner 18HP – selected models
  • - Mariner 20HP – selected models

Cross-Reference & Replacement Part Numbers

  • Genuine Tohatsu
  • - 334-65021-0
  • - 334650210M
  • Mercury / Mariner
  • - 47-803748
  • - 47-8M0214944
  • Other OEM Cross-References
  • - Evinrude 5040046 – supplier-listed equivalent; verify engine-specific application.
  • Aftermarket Replacements
  • - Sierra 18-8921
  • - CEF 500383

Suitable Applications

  • - Routine water pump impeller replacement.
  • - Two-stroke and four-stroke outboard servicing.
  • - Water pump housing and liner maintenance.
  • - Cooling-system repairs following overheating.
  • - Preventative maintenance for saltwater-operated engines.

Signs the Water Pump Impeller Needs Replacing

  • - Weak or absent tell-tale water flow.
  • - Engine overheating or temperature alarm.
  • - Cracked, hardened or missing rubber blades.
  • - Excessive blade deformation.
  • - Damaged impeller hub.
  • - Deterioration found during scheduled servicing.

Shipping

Ships Australia-wide