21282005 Water Pump | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta MD22 Engine Coolant Water Pump - Part Number: 21282005

Genuine Volvo Penta engine-coolant circulation pump for MD22-family marine diesels. It replaces earlier pump references 861578 and 859774 and circulates fresh coolant through the cylinder block, cylinder head and heat exchanger.

⚙️ Key Features

• Genuine Volvo Penta coolant circulation pump

• Confirmed MD22-family application

• Supersedes 861578 and 859774

• Complete pump housing, shaft, bearing and impeller assembly

• Documented Crom Marine equivalent available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21282005 → Supersedes 861578

• 861578 → Supersedes 859774

• 859774 (earlier water-pump reference)

OEM / Related Numbers:

• 21282005 - current OEM reference

Aftermarket / Verified Equivalents:

• Crom Marine: 115279

🚤 Compatibility

Commonly used on:

• Volvo Penta MD22 marine diesel closed-cooling system

Typically suits:

• Engine models:

• MD22A

• MD22A-A

• MD22L-A

• TMD22A

• TMD22-A

• MD22

• MD22L

• Serial / Specification Control: Engine variant, pump pulley and housing revision must match.

• HP Range: MD22-family rating dependent

• Engine Type: Volvo Penta MD22 four-cylinder marine diesel

• Year Range: MD22-family production; engine-serial controlled

🔌 Function

Circulates fresh coolant through the engine and heat exchanger to control operating temperature.

Common signs of failure:

• Coolant leakage from the seal or housing

• Overheating despite correct coolant level

• Bearing noise, shaft play or pulley wobble

• Reduced circulation caused by impeller damage or corrosion

• Repeated temperature alarms at sustained load

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging