CATBearing & Bushing

9Y4004 Piston — Cat 16G 16H NA

This is a precision-engineered piston designed to form a critical seal within the engine's cylinders, converting combustion pressure into mechanical force. Manufactured to meet exact OEM tolerances and material specifications, it ensures optimal compression and combustion efficiency compared to a worn or damaged piston. Operators may notice a loss of engine power, increased exhaust smoke, or rough idling when this piston begins to fail.

Piston – Part No 9Y4004 – CAT Spare Part
Part Specifications
BrandCAT
CategoryBearing & Bushing
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

Never strike bearings directly — use a bearing press or driver set. Heat housing (not bearing) to ease installation. Replace bearings in sets where applicable. Check housing bore diameter before fitting — out-of-round bores destroy new bearings.

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
ApplicationEngine Cylinder
Service LifeReplace as part of engine overhaul or failure
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

Early signs of piston failure include a decrease in engine power, increased oil consumption, and visible blue or white smoke from the exhaust. If left unaddressed, this can lead to increased blow-by, potential engine overheating, and severe internal engine damage. The ultimate consequence is a significant reduction in engine performance and potential for catastrophic engine failure.

Installation Tip

Ensure the cylinder bore is honed to the correct surface finish and is free of any debris before installing the piston. Always install new piston rings and lubricate the piston skirt and rings generously before insertion.

Service Note

Replace piston rings, cylinder liners, and connecting rod bearings simultaneously with the pistons for a complete engine overhaul.