CATUndercarriage

2979158 Piston — Cat 345B ii 345c

This is a CAT Piston, a critical component within the engine's combustion chamber responsible for converting the expanding gases from fuel combustion into mechanical force. It is manufactured to meet stringent OEM quality standards, ensuring superior durability and performance compared to worn pistons that exhibit scoring or deformation. Operator symptoms of a failing piston include a noticeable loss of engine power, increased exhaust smoke, and unusual engine noises like knocking or rattling.

Piston – Part No 2979158 – 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 TypeEngine Piston
MaterialCast Aluminum Alloy
ApplicationEngine Cylinder
Service LifeReplace based on engine overhaul schedule
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing piston may initially present as a subtle decrease in engine performance or slightly increased fuel consumption. If ignored, the issue can progress to visible exhaust smoke and audible engine knocking, indicating potential damage to the cylinder liner or connecting rod. Continued operation risks severe internal engine damage.

Installation Tip

Ensure the cylinder bore is thoroughly cleaned and inspected for any scoring or out-of-roundness before installing the new piston. Avoid forcing the piston into the cylinder bore; it should slide in smoothly with the correct ring compression.

Service Note

Inspect cylinder liners for wear and honing pattern, and replace piston rings as a set.