CATEngine Parts

7e3428 Piston — Cat 320 l 918F

This piston is a fundamental component within the engine's combustion chamber, responsible for converting the pressure from burning fuel into mechanical motion. Manufactured to precise dimensions and material specifications, it forms a critical seal with the cylinder wall and withstands extreme temperatures and pressures, unlike a worn or damaged piston which can lead to blow-by and reduced power. Operators may experience a noticeable loss of engine power, increased exhaust smoke, or rough running if this piston fails.

Piston – Part No 7e3428 – 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
ApplicationEngine combustion chamber
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failed piston might be a significant loss of engine power or a rough engine idle. If ignored, this can lead to increased oil consumption, excessive exhaust smoke, and potential damage to the cylinder wall and crankshaft. Continued operation risks severe internal engine damage and costly repairs.

Installation Tip

Ensure the piston rings are correctly seated in their grooves and oriented according to the service manual before installing the piston into the cylinder. Avoid dropping the piston or striking it, which can cause damage.

Service Note

Always replace piston rings and inspect cylinder liners and connecting rod bearings when installing a new piston.