CATBearing & Bushing

1W1665 Bearing — Cat

This is a grooved main engine bearing designed to provide critical lubrication and support for the crankshaft in specific Caterpillar engines. Manufactured to precise OEM tolerances, it ensures proper oil film formation and load distribution, unlike a worn bearing which would have compromised clearances and reduced oil pressure. Operators may observe a significant drop in oil pressure, knocking sounds from the engine, or increased engine wear if this bearing fails.

Bearing – Part No 1W1665 – 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 Engine Bearing (Grooved)
MaterialSteel-backed Babbitt alloy
ApplicationEngine Crankshaft Main Journal
Service LifeReplace during engine overhaul or based on inspection
CompatibilityCAT 3204 Engine
ConditionNew — OEM specification aftermarket

Failure Symptoms

A critical symptom of failure is a sudden and significant drop in engine oil pressure, often accompanied by a distinct knocking sound from the engine. If operation continues, this can lead to rapid crankshaft and bearing journal damage, potentially causing catastrophic engine failure.

Installation Tip

Ensure all crankshaft journals and bearing surfaces are perfectly clean and free from any debris or scoring. Never reuse old bearing bolts; always use new ones with the correct torque specifications.

Service Note

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