CATBearing & Bushing

4W5492- 020 Main Bearing — Cat 16G 245

This is a main engine bearing designed to provide a low-friction surface between the crankshaft and the engine block. It is manufactured to meet stringent OEM standards, ensuring superior durability and performance compared to worn or damaged bearings. Operators may notice a knocking or rattling sound from the engine, increased oil pressure fluctuations, or a loss of engine power when these bearings begin to fail.

Main Bearing – Part No 4W5492- 020 – 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
MaterialBabbitt lined steel
ApplicationEngine crankshaft support
Service LifeReplace every 5,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of main bearing failure include a distinct knocking sound from the engine, particularly under load. If ignored, this noise will intensify, and oil pressure may become erratic, leading to potential lubrication starvation. Continued operation risks severe crankshaft and block damage.

Installation Tip

Ensure the crankshaft journals and bearing bores are meticulously cleaned of all debris and old gasket material before installation. Avoid mixing up the upper and lower bearing shells, as they are often specific to their position.

Service Note

Inspect the crankshaft journals for scoring or wear, and check the connecting rod bearings for signs of damage.