CATBearing & Bushing

4089908CU Cummins Isx® — Cat

This is a high-performance bearing specifically designed for Cummins ISX engines, crucial for supporting crankshaft and camshaft rotation. Manufactured to meet rigorous aftermarket standards, it offers durability comparable to original components, ensuring smooth engine operation. Operators might observe a drop in oil pressure, unusual engine noise, or a loss of power if this bearing is compromised.

Cummins Isx® – Part No 4089908CU – 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 TypeEngine Bearing
MaterialTri-metal alloy
ApplicationCummins ISX engine
Service LifeReplace as part of engine overhaul or based on inspection
CompatibilityCummins ISX
ConditionNew — CTP aftermarket replacement

Failure Symptoms

A failing 4089908CU bearing may first present as a persistent knocking sound from the engine or a noticeable decrease in oil pressure. If ignored, this can lead to severe internal engine damage, including crankshaft and connecting rod failure. The ultimate consequence is a non-operational engine requiring extensive and costly repairs.

Installation Tip

Ensure all oil passages feeding the bearing are completely clear of debris before installation. Do not reuse old bearing bolts; always use new, properly torqued fasteners.

Service Note

When replacing engine bearings, it is crucial to inspect the crankshaft journals for wear and proper radius.