CATElectrical Parts

1173437 Pulley — Cat 120H 120K

This is a replacement pulley, designed to guide and support belts within the engine or accessory drive system. Manufactured to meet strict material and dimensional tolerances, it ensures smooth rotation and optimal belt tension, unlike a worn pulley which may exhibit wobble or bearing noise. Operators might hear a squealing or grinding noise from the engine bay, or observe excessive belt vibration, indicating a failing pulley.

Pulley – Part No 1173437 – 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 TypePulley
MaterialSteel or cast iron
ApplicationAccessory drive system
Service LifeReplace as needed based on hours or failure
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing pulley will often first present as an audible squealing or grinding noise emanating from the engine compartment. If left unaddressed, the pulley bearing can seize, leading to belt slippage, overheating, or complete belt breakage. The worst outcome is the sudden loss of essential accessory functions, potentially leading to engine damage or operational shutdown.

Installation Tip

Before removing the old pulley, note its orientation and any spacer or washer placement. Ensure the new pulley is perfectly aligned with the other pulleys in the system to prevent premature belt wear.

Service Note

Inspect the condition of the drive belt and tensioner assembly for signs of wear or malfunction when replacing this pulley.