CATTransmission Parts

383-3940 Drive Shaft — Cat 311D 312D

This is a Drive Shaft, a critical component in the powertrain that transmits rotational power from the transmission to the differential or final drive. Engineered to meet robust OEM standards, it ensures efficient power transfer and withstands significant torque loads, unlike a worn or bent shaft that can cause vibrations and power loss. Operators may experience excessive vibration, clunking noises during acceleration or deceleration, or a loss of drive if this shaft fails.

Drive Shaft – Part No 383-3940 – CAT Spare Part
Part Specifications
BrandCAT
CategoryTransmission 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

Drain and replace transmission fluid when servicing internal components. Use correct ATF specification. Pre-fill torque converters with fluid before installation. Allow 10 minutes for fluid to settle before checking level.

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

Part TypeDrive Shaft
MaterialHeat-treated steel alloy
ApplicationDrivetrain power transmission
Service LifeReplace if damaged, worn, or unbalanced
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The most common symptom of a failing drive shaft is a noticeable vibration that increases with vehicle speed, often accompanied by clunking sounds when shifting into gear or changing direction. If the shaft becomes severely damaged or unbalanced, it can lead to a complete loss of drive and potential damage to the transmission or differential.

Installation Tip

Ensure the universal joints are properly aligned with the mating components before tightening to prevent premature wear. Always mark the shaft's orientation before removal to ensure correct reinstallation and balance.

Service Note

Inspect the universal joints, center support bearings, and transmission/differential output flanges for wear or damage when replacing the drive shaft.