CATBearing & Bushing

4n3983 Bearing .010 — Cat 120g 130g

This is an engine crankshaft bearing, specifically sized at .010 undersize, designed to accommodate a crankshaft that has been machined due to wear or damage. It functions by providing a low-friction interface between the crankshaft and the engine block, crucial for maintaining engine balance and power output. Symptoms of a worn or improperly sized bearing include a distinct knocking sound that changes with engine RPM and a noticeable decrease in oil pressure.

Bearing .010 – Part No 4n3983 – 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 Crankshaft Bearing (.010 Undersize)
MaterialSteel alloy with babbit lining
ApplicationEngine crankshaft main journal
Service LifeReplace based on engine overhaul schedule
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

A noticeable increase in engine noise, often described as a rhythmic knocking or tapping that varies with engine speed, is the primary indicator of a failing bearing. If left unaddressed, the noise will become louder, and oil pressure may drop significantly, potentially leading to engine seizure.

Installation Tip

Carefully clean the crankshaft journals and the bearing bores in the engine block to remove all traces of old bearing material and dirt. Ensure the correct bearing orientation is maintained during installation.

Service Note

Inspect the crankshaft for straightness and check the oil pump for proper pressure output.