CATElectrical Parts

8N9327 Pulley — Cat 814B 815B

This pulley is a critical component in the engine's accessory drive system, responsible for transmitting rotational force from the crankshaft to other components like the alternator or fan. Manufactured from durable materials to withstand high rotational speeds and belt tension, it offers superior longevity over a worn pulley that may exhibit grooving or imbalance. Operators might observe increased belt noise, premature belt wear, or a lack of charging system function if this pulley is failing.

Pulley – Part No 8N9327 – CAT Spare Part
Part Specifications
BrandCAT
CategoryElectrical 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

Disconnect main battery before working on electrical components. Use dielectric grease on all connector pins. Check ground connections — most electrical faults trace to poor grounds. Test with multimeter before installing new parts.

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

Part TypeAccessory Drive Pulley
MaterialCast Iron
ApplicationEngine Accessory Drive System
Service LifeReplace every 4,000 hrs or upon inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing pulley may first manifest as a high-pitched squealing noise from the engine bay, especially under load. If ignored, the pulley can develop excessive wobble or seize, leading to rapid belt destruction and potential damage to the driven accessory. The ultimate consequence is the loss of critical engine functions like cooling or charging.

Installation Tip

Ensure the new pulley is perfectly aligned with the other pulleys in the belt system before tightening the mounting bolts. Do not reuse old mounting hardware, as it may be fatigued.

Service Note

Inspect the condition of the drive belt and the tensioner assembly for wear and proper function when replacing the pulley.