CATEngine Parts

1w-4407 Fan Hub Pulley — Cat 3306

This is a Fan Hub Pulley designed to drive the engine's cooling fan, ensuring optimal operating temperatures. Manufactured to meet high-durability standards, it provides smooth rotation and reliable power transfer, unlike worn pulleys that can exhibit wobble or noise. Operators may observe excessive fan noise, a loose fan belt, or an overheating engine when this pulley is failing.

Fan Hub Pulley – Part No 1w-4407 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeFan Hub Pulley
MaterialSteel
ApplicationEngine cooling system
Service LifeReplace if bearing shows wear or wobble
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early indications of a failing fan hub pulley include unusual squealing or grinding noises from the front of the engine. If ignored, the pulley's bearing may seize or the pulley itself could fracture, leading to a loss of fan operation and potential engine overheating. A compromised fan drive system can significantly impact the engine's ability to maintain a safe operating temperature.

Installation Tip

Before installing the new pulley, carefully inspect the mounting bolts and ensure the threads are clean and undamaged. Do not use excessive force when tightening the pulley bolts, as this can strip the threads or damage the hub.

Service Note

Always inspect the cooling fan blades for damage and the fan belt for wear and proper tension when replacing the fan hub pulley.