CATBearing & Bushing

5185431 Main Bearing Set — Cat 420E 430E

This is a Main Bearing Set designed to provide critical support for the engine crankshaft, ensuring smooth rotation and optimal power transfer. Manufactured to meet rigorous OEM specifications, these bearings offer superior load-bearing capacity and wear resistance compared to compromised or worn components. Operators may observe a drop in oil pressure, increased engine noise, or a general loss of engine power when this bearing set begins to fail.

Main Bearing Set – Part No 5185431 – CAT Spare Part
Part Specifications
BrandCAT
CategoryBearing & Bushing
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

Never strike bearings directly — use a bearing press or driver set. Heat housing (not bearing) to ease installation. Replace bearings in sets where applicable. Check housing bore diameter before fitting — out-of-round bores destroy new bearings.

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 Set
MaterialSteel alloy with bearing material overlay
ApplicationEngine crankshaft support
Service LifeReplace during engine overhaul or as indicated by wear
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A primary indicator of main bearing failure is a persistent knocking sound from the engine, especially under load, accompanied by a noticeable drop in oil pressure. If ignored, this can lead to severe crankshaft and block damage, potentially resulting in engine seizure. Continued operation risks extensive and costly engine repairs.

Installation Tip

Ensure the crankshaft journals are meticulously cleaned and inspected for any imperfections before installing the new bearings. Never reuse old bearing bolts; always use new ones to ensure proper clamping force.

Service Note

Always inspect the crankshaft journals for scoring or out-of-roundness and check the connecting rod bearings when replacing the main bearing set.