CATBearing & Bushing

3537424 Main Bearing Kit — Cat 312D2 312D2 GC

This is a Main Bearing Kit designed to provide critical support for the crankshaft within Caterpillar diesel engines. Manufactured to meet stringent OEM standards, these bearings offer superior wear resistance and load-bearing capacity compared to worn components that can lead to oil pressure loss and increased engine noise. Operators may observe a drop in oil pressure, knocking sounds from the engine, or increased exhaust smoke when these bearings begin to fail.

Main Bearing Kit – Part No 3537424 – 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
MaterialTri-metal alloy
ApplicationEngine Crankshaft
Service LifeReplace during engine overhaul or based on oil pressure readings
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of failing main bearings is often a decrease in engine oil pressure, especially at higher RPMs. This can progress to audible knocking or rumbling sounds from the engine's lower end. If left unaddressed, severe crankshaft and block damage can occur, leading to a complete engine failure.

Installation Tip

Thoroughly clean the crankshaft journals and the engine block's main bearing bores before installing new bearings. Ensure each bearing half is correctly oriented and lubricated with assembly lube.

Service Note

When replacing main bearings, it is crucial to inspect the crankshaft journals for wear and to check connecting rod bearings for signs of damage.