CATBearing & Bushing

1N4319-030 Main Bearing — Cat

This is a precision-engineered main bearing designed to support the crankshaft within the engine block, ensuring proper alignment and reduced friction. Manufactured to meet stringent CAT specifications, it offers superior wear resistance and load-carrying capacity compared to a worn component. Operators may observe a drop in oil pressure, increased engine noise, or a loss of engine power when this bearing fails.

Main Bearing – Part No 1N4319-030 – 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
MaterialSteel alloy with overlay
ApplicationEngine crankshaft
Service LifeReplace during engine overhaul or based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early indicators of main bearing failure include a noticeable knocking sound from the engine, especially under load, and a reduction in oil pressure readings. If ignored, the bearing will continue to wear, potentially leading to crankshaft damage and severe engine internal component failure. Persistent operation with failing main bearings risks catastrophic engine damage and costly repairs.

Installation Tip

Ensure crankshaft journals are meticulously cleaned and inspected for any imperfections before installing the new bearings. Avoid reusing old bearing cap bolts, as they may have stretched and can affect clamping force.

Service Note

Always inspect the crankshaft journals for scoring or wear and clean the engine block bearing saddles thoroughly when replacing the 1N4319-030 main bearings.