CATEngine Parts

282-8561 Piston — Cat S3Q2 S4Q2T

This piston is a fundamental component within the engine's cylinders, forming the moving base of the combustion chamber and transmitting the force of combustion to the crankshaft. Manufactured to meet precise OEM tolerances, it ensures optimal compression and sealing compared to a worn piston with scoring or excessive clearance. Operators might observe increased oil consumption, blue exhaust smoke, a loss of engine power, or knocking sounds when a piston is damaged or worn.

Piston – Part No 282-8561 – 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
MaterialAluminum alloy with wear-resistant coating
ApplicationEngine cylinder assembly
Service LifeReplace during engine overhaul or if damaged
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a worn or damaged piston is often increased oil consumption and blue smoke appearing in the exhaust. As the condition worsens, the engine may lose significant power, and knocking sounds may become audible, especially under load. Prolonged operation with a compromised piston can lead to severe cylinder wall damage and potential connecting rod failure.

Installation Tip

Ensure the cylinder bore is clean and free of any debris or burrs before installing the piston. Never reuse old piston rings; always install new ones with the correct orientation and gap.

Service Note

Always replace the piston rings and inspect the cylinder liner for wear or damage when replacing a piston.