CATEngine Parts

2651401 Crown Piston — Cat 330D 336D

This crown piston is a critical component within the engine's combustion chamber, working with the connecting rod and cylinder liner to convert fuel energy into mechanical motion. Manufactured from high-strength alloys to withstand extreme temperatures and pressures, it offers superior durability compared to a worn piston that may exhibit scoring or reduced compression. Operators may observe a loss of engine power, increased exhaust smoke, or unusual engine noises like knocking when a piston begins to fail.

Crown Piston – Part No 2651401 – 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
MaterialHigh-strength alloy
ApplicationEngine Combustion Chamber
Service LifeReplace during engine overhaul or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms of a failing piston include a noticeable decrease in engine power and increased blue or black exhaust smoke. As the condition worsens, the engine may develop a distinct knocking sound, and oil consumption will rise significantly. Continued operation risks severe internal engine damage due to loss of compression and potential piston seizure.

Installation Tip

Always clean the cylinder bore thoroughly and ensure it is within specified tolerances before installing a new piston. Avoid using excessive force or improper tools when seating the piston rings into the cylinder bore.

Service Note

Inspect cylinder liners for wear or scoring, and replace piston rings and connecting rod bearings when installing a new piston.