21676401 Coolant Pump | Genuine Volvo Penta Part

🔧 Product Description

A genuine mechanically driven coolant pump used in a Volvo Penta engine cooling system. Pump 21676401 circulates coolant through the cylinder block, head, oil cooler and external heat exchanger or radiator to control engine temperature.

🚤 Compatibility

• Year Range: Approximately 2005 - 2021 production-era applications

⚙️ Key Features

• Genuine Volvo Penta complete coolant pump
• Factory impeller, shaft, bearing and seal arrangement
• Maintains specified coolant circulation
• Designed for continuous engine duty
• Direct replacement complete assembly
• Engine type: Application-dependent Volvo Penta diesel

🔌 Function

Circulates engine coolant through internal and external cooling passages so combustion and lubricating-system heat can be rejected.

⚠️ Common Signs of Failure

• Coolant leakage from the shaft seal or housing
• Bearing noise or pulley wobble
• Overheating at load
• Reduced coolant flow from impeller damage
• Shaft seizure or belt damage

🛠️ Service Notes

• Drain the coolant to below the pump before removal, and catch and dispose of it properly
• Clean the mating face back to bare metal without scoring it, and fit the new gasket or O-ring dry unless the workshop manual for your engine specifies a sealant
• Do not lever or hammer on the pulley or the impeller housing to seat the pump, and check the shaft turns freely by hand once it is bolted up
• Set drive belt tension and check pulley alignment by the procedure for your engine — over-tensioning will wreck the bearing in a new pump
• Refill with coolant of the correct specification and mixture, vent the system fully, then run up and check both for leaks and for a normal temperature rise and fall

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21676412 - D9A2 coolant-pump reference
• 21676515 - related coolant-pump reference
• 22195450 - related later pump references
• 22902431 - related later pump references

OEM Reman Alternatives

• 3801741 - related genuine remanufactured pump

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging