CATBearing & Bushing

4P5438 Bearing — Cat 3508 3512

This is a main engine bearing designed to reduce friction between the crankshaft and connecting rods in heavy-duty Caterpillar engines. It is manufactured to meet stringent OEM material and dimensional standards, ensuring optimal performance and durability compared to a worn bearing which would exhibit scoring and increased clearance. Operators may notice a knocking sound from the engine, loss of oil pressure, or a significant decrease in engine power when this bearing begins to fail.

Bearing – Part No 4P5438 – 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 Main Bearing
MaterialSteel-backed babbitt
ApplicationEngine crankshaft
Service LifeReplace based on engine overhaul schedule
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A noticeable increase in engine noise, often described as a deep knocking or rumbling sound, is the first sign of a failing main bearing. If ignored, the bearing will continue to wear, leading to increased crankshaft wear, reduced oil pressure, and potential engine seizure. Continued operation with a failed main bearing risks severe damage to the crankshaft and engine block.

Installation Tip

Ensure the crankshaft journals are meticulously cleaned and inspected for any imperfections before installation. Avoid using abrasive materials or solvents that could damage the bearing surface.

Service Note

Inspect the crankshaft journals for wear and scoring, and check connecting rod bearings for signs of damage.