CATEngine Parts

5I7539 Connecting Rod Bushing — Cat 311 311B

This connecting rod bushing is a critical component that facilitates the smooth rotation of the connecting rod on the crankshaft journal. It is manufactured from high-strength, wear-resistant material to endure the high loads and temperatures of engine operation, offering superior longevity over a worn or scored bushing. Operators may experience increased engine noise, particularly a knocking sound from the bottom end, or a drop in oil pressure as indicators of a failing bushing.

Connecting Rod Bushing – Part No 5I7539 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
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

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeConnecting Rod Bushing
MaterialBronze Alloy
ApplicationEngine Connecting Rod
Service LifeReplace during engine overhaul or as needed
CompatibilityCAT 311, 311B, 311C, 312B, 312C
ConditionNew — CTP aftermarket replacement

Failure Symptoms

The first symptom of a worn connecting rod bushing is typically an audible knocking or rattling sound from the engine's lower end, which increases with engine RPM. If ignored, the excessive clearance will lead to increased stress on the crankshaft and bearings, potentially causing rapid wear and oil pressure loss. Continued operation can result in severe engine damage and costly repairs.

Installation Tip

Ensure the connecting rod and crankshaft journal surfaces are perfectly clean and free of any burrs or imperfections before installation. Use an appropriate bushing driver tool to install the bushing straight and avoid damaging its precise inner diameter.

Service Note

Always replace connecting rod bearings and inspect crankshaft journals for wear or damage when replacing connecting rod bushings.