CATUndercarriage

3W0640 Piston — Cat 517 527

This piston is a fundamental component within the engine's combustion chamber, responsible for converting the pressure from expanding gases into mechanical force. Manufactured to precise OEM specifications, it ensures optimal sealing and heat transfer, outperforming worn or damaged pistons. Operators might notice a loss of engine power, increased exhaust smoke, or unusual engine noises if this piston is failing.

Piston – Part No 3W0640 – CAT Spare Part
Part Specifications
BrandCAT
CategoryUndercarriage
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

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

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

Part TypePiston
MaterialAluminum Alloy
ApplicationEngine Combustion Chamber
Service LifeReplace based on engine overhaul schedule or failure, typically 5,000-10,000 hrs
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

Early indications of a failing piston may include a decrease in engine performance, rough idling, or increased oil consumption. If the problem progresses, it can lead to blow-by, excessive exhaust smoke, and potential engine overheating. A severely damaged piston can cause catastrophic engine failure, leading to extensive and costly repairs.

Installation Tip

Ensure the cylinder bore is perfectly clean and free of any scoring before installing the new piston. Always install new piston rings and lubricate the piston and rings thoroughly before insertion.

Service Note

When replacing pistons, always replace piston rings, cylinder liners, and connecting rod bearings as a set.