21425463 Pulley | Genuine Volvo Penta Part

🔧 Product Description

Genuine pulley manufactured for the Volvo Penta accessory or belt-drive assembly that specifies part number 21425463. Its diameter, groove profile and offset determine accessory speed and belt alignment.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD720VE
• Volvo Penta TAD721VE
• Volvo Penta TAD722VE
• Volvo Penta TAD520VE

• Engine Family: TAD
• Serial Range: For fan at separate fan bracket., 1+2 grooves, SN10851817-

⚙️ Key Features

• Factory pulley diameter and groove profile
• Precision hub and mounting surfaces
• Maintains belt alignment
• Designed for the assigned engine speed and accessory load

🔌 Function

The pulley transfers belt power to or from the assigned engine accessory.

⚠️ Common Signs of Failure

• Worn or damaged grooves
• Cracks around the hub
• Belt misalignment

🛠️ Service Notes

• Inspect the belt running surfaces before fitting — a pulley with glazed, scored, pitted or rust-roughened grooves will chew through a new belt in very little running time
• Check that the pulley runs true and that its bearing or bush turns smoothly with no roughness or side play; fit a new belt whenever a pulley is changed
• Confirm that every pulley in the drive lies in the same plane and that the belt profile matches each groove — misalignment shows up as belt dust, squeal or a worn belt edge and will destroy a new belt quickly
• Fit onto a clean, dry, burr-free shaft or hub face and tighten the retaining fasteners in the sequence and to the figures given in the workshop manual for your engine
• Turn the engine over by hand before starting to confirm the belt is fully seated in every groove and that nothing fouls, then recheck belt tension after the first running period

📦 Condition

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