21508511 Adapter | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta TWD16 Fan-Drive Cooling-System Adapter - Part Number: 21508511

A structural adapter used in the cooling-fan, fan-hub and belt-drive arrangement of Volvo Penta TWD1644GE and TWD1645GE generating-set engines.

⚙️ Key Features

• Cooling-system and fan-drive application

• Correct mounting geometry for the fan clutch and hub assembly

• Heavy-duty engine bracket construction

• Maintains pulley and fan alignment

• Designed for the specified studs, nuts and retaining hardware

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• Current OEM reference: 21508511

OEM / Related Numbers:

• 21508511

• 24130950 - Fan clutch

• 24235277 - Bracket

• 60116212 - Retainer

• 24156250 - Fan hub

• 953002 - Stud

• 3883978 - V-ribbed belt

• 3829958 - Pulley

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

• TWD1644GE cooling system

• TWD1645GE cooling system

• Confirm fan-clutch and bracket configuration by engine serial number

🔌 Function

The adapter locates the fan-drive components and maintains the alignment needed for reliable belt and cooling-fan operation.

Common signs of failure or damage:

• Fan or pulley misalignment

• Cracks around mounting points

• Fretting or elongated holes

• Abnormal belt wear

• Fan vibration or contact with the shroud

• Fasteners repeatedly loosening

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging