CATUndercarriage

0332379 Main Bearing — Cat INDUSTRIAL Engine: 3054

This main bearing is a crucial component within the engine's crankshaft assembly, designed to reduce friction and support the rotating shaft. Manufactured to meet precise OEM specifications, it provides superior load-bearing capacity and wear resistance compared to a worn bearing with scoring or excessive clearance. Operators may notice increased engine noise, particularly a knocking sound, or a drop in oil pressure when this main bearing begins to fail.

Main Bearing – Part No 0332379 – CAT Spare Part
Part Specifications
BrandCAT
CategoryUndercarriage
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

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

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

Part TypeMain Bearing
MaterialSteel-backed aluminum alloy
ApplicationEngine crankshaft
Service LifeReplace during engine overhaul, typically 8,000-12,000 hours
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of main bearing failure is often an audible knocking sound from the engine, especially under load, accompanied by a potential decrease in oil pressure. If ignored, the increased friction and wear can lead to severe engine damage, including crankshaft journal damage and potential seizure.

Installation Tip

Thoroughly clean the crankshaft journals and bearing saddles before installation to prevent contamination. Ensure the correct bearing crush is achieved during installation to maintain proper oil clearance.

Service Note

When replacing main bearings, always inspect and replace connecting rod bearings, thrust bearings, and check crankshaft straightness.