CATUndercarriage

2979157 Piston — Cat 1290T 1390

This piston is a vital internal engine component responsible for converting the pressure of expanding gases into rotational force within the engine's cylinders. Manufactured to precise specifications, it offers superior strength and heat resistance compared to a worn or damaged piston. Operators may notice a significant loss of engine power, increased exhaust smoke, or unusual engine noises such as knocking when a piston begins to fail.

Piston – Part No 2979157 – 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
ApplicationInternal Engine Combustion
Service LifeReplace as part of engine overhaul or as needed
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

Early signs of piston failure include a noticeable decrease in engine power and increased blue or white smoke from the exhaust. If left unaddressed, the piston can suffer from ring land failure or even seize, leading to severe internal engine damage and complete loss of power. This can result in extensive and costly engine repairs.

Installation Tip

Ensure the cylinder bore is perfectly clean and lubricated before installing the piston to prevent scoring. Always install new piston rings and ensure they are properly gapped and oriented.

Service Note

When replacing pistons, always replace piston rings, inspect cylinder liners for wear, and consider replacing connecting rod bearings.