CATEngine Parts

2B9373 Woodruff Key — Cat 320C 320D

This Woodruff key is a semi-circular metal key used to transmit torque between a shaft and a hub, preventing relative rotation within engine assemblies. It is manufactured to meet stringent material and dimensional standards, ensuring a precise fit and reliable power transfer unlike a worn key that may have rounded edges or become loose. Operators may notice engine misfires, loss of power, or unusual noises if the key fails to properly engage the shaft and pulley.

Woodruff Key – Part No 2B9373 – 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 TypeWoodruff Key
MaterialHardened Steel
ApplicationEngine Shaft and Hub Connection
Service LifeReplace as needed during component overhaul
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A loose or damaged Woodruff key can first manifest as intermittent power loss or a slight hesitation during acceleration. If left unaddressed, the key may shear or the keyway can become damaged, leading to complete loss of drive for the affected component. This can result in the engine running poorly or a critical system, like the fan, failing to operate.

Installation Tip

Ensure the keyway in both the shaft and the component is thoroughly cleaned of any debris or old sealant before installation. Do not force the key into place; it should seat snugly with light tapping if necessary.

Service Note

Inspect the corresponding shaft and component keyways for wear or damage when replacing a Woodruff key.