CATEngine Parts

3153395 Piston As — Cat 416e 420F

This is a CAT Piston Assembly, a crucial component within the engine's combustion chamber that converts the pressure from burning fuel into mechanical motion. Manufactured to precise tolerances, it ensures optimal compression and power transfer, unlike a worn piston which may show signs of scoring or excessive clearance. Operators might observe a loss of engine power, increased exhaust smoke, or unusual knocking sounds if this assembly is compromised.

Piston As – Part No 3153395 – 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 TypePiston Assembly
MaterialAluminum alloy
ApplicationEngine combustion chamber
Service LifeReplace as part of engine overhaul
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

Early indications of a failing piston assembly can include a noticeable reduction in engine performance or increased blue-tinged exhaust smoke. Continued operation may lead to increased oil consumption and potential cylinder wall damage. Ignoring these symptoms can result in a loss of compression and potential engine seizure.

Installation Tip

Carefully inspect the cylinder walls for any scoring or damage before installing the new piston assembly. Ensure the piston rings are properly seated in their grooves and oriented correctly to prevent oil consumption.

Service Note

When replacing piston assemblies, it is highly recommended to also inspect and potentially replace cylinder liners, connecting rod bearings, and main bearings.