20593394 Pulley | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta pulley used in the engine auxiliary belt-drive system. It is supplied as an individual service component under part number 20593394 and is intended to restore the original fit, sealing, alignment, retention or operating function of the specified assembly. This listing supplies the named component only; adjoining parts are serviced separately.

🚤 Compatibility

Typically suits:

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

• Engine Family: TAD

⚙️ Key Features

• Matched belt profile and running diameter for the assigned auxiliary drive
• Hub and mounting interface maintain pulley or fan concentricity
• Designed for the specified belt load, engine speed and cooling demand
• Works with the documented bearings, adapters, fan and retaining hardware
• Correct alignment prevents belt edge wear and bearing overload
• Check run-out, bearing play and tensioner movement during installation
• Engine type: Volvo Penta D5/D7 inline industrial diesel family

🔌 Function

Transfers belt drive between the crankshaft and the engine auxiliaries.

⚠️ Common Signs of Failure

• Belt tracking becomes incorrect
• The pulley is cracked or worn
• Run-out or vibration is visible
• The hub or keyway becomes loose
• Belt noise or dust increases

🛠️ 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

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 20593362 - Related Fan Hub
• 20593398 - Related Tensioner
• 20593361 - Related Clutch
• 20593409 - Related Washer
• 20593360 - Related Adapter
• 20593473 - Related Strap
• 20405987 - Fan-drive adapter references
• 20405988 - Fan-drive adapter references
• 21034597 - Fan-drive adapter references
• 22032282 - Fan-drive adapter references
• 20460331 - Fan references
• 20464440 - Fan references
• 21849998 - Fan references
• 3887296 - Fan references
• 3827487 - Fan references
• 21657224 - Flange
• 21665292 - Additional adapters
• 21200335 - Additional adapters
• 20460319 - Washer
• 20771395 - Belt-tensioner references
• 978467 - Related V-belt sets
• 978489 - Related V-belt sets

📦 Condition

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