CATBearing & Bushing

5n6165 Bearing — Cat D399 G379

This is a high-performance bearing designed to reduce friction and support heavy loads in large industrial engines and power generation equipment from Caterpillar. Manufactured to meet stringent OEM quality standards, it ensures reliable operation and longevity, unlike a worn bearing that can cause increased vibration and noise. Operators may notice abnormal engine noises, elevated oil temperatures, or a reduction in engine power when this bearing begins to fail.

Bearing – Part No 5n6165 – 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 TypeBearing
MaterialHigh-strength Steel Alloy
ApplicationLarge Industrial Engine
Service LifeReplace based on inspection or 4,000 hours
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of failure might include faint knocking sounds during engine operation or a slight increase in oil pressure fluctuations. If ignored, the bearing can degrade, leading to louder, more consistent knocking, potential loss of oil pressure, and a noticeable decrease in engine power. Continued operation risks severe internal engine damage, potentially causing catastrophic engine failure.

Installation Tip

Ensure all crankshaft and connecting rod journals are meticulously cleaned and checked for roundness and surface finish before installing new bearings. Never reuse old bearings or mix shells from different sets.

Service Note

Inspect crankshaft journals for wear or damage, and verify oil clearance specifications are met.