CATEngine Parts

7N5036 Piston Body — Cat D9H Engine: D353

This piston body is a fundamental component within the engine's combustion chamber, designed to convert the pressure from burning fuel into mechanical motion. Manufactured from high-grade materials, it offers superior resistance to heat and wear compared to a scored or seized piston which can lead to significant power loss and internal engine damage. Operators may observe excessive smoke from the exhaust, a noticeable drop in engine power, or knocking sounds when this part is failing.

Piston Body – Part No 7N5036 – 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 Body
MaterialAluminum Alloy
ApplicationEngine Combustion Chamber
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing piston body include increased exhaust smoke and a reduction in engine power. If the issue progresses, the piston may begin to knock or slap within the cylinder, leading to severe internal engine damage. Continued operation risks catastrophic engine failure due to mechanical breakdown.

Installation Tip

Ensure the cylinder bore is clean and properly honed before installing the new piston to prevent scoring and ensure a good seal. Always install new piston rings with the piston body, ensuring correct orientation and gap placement.

Service Note

Replace piston rings, connecting rod bearings, and inspect cylinder liners when installing a new piston body.