CATEngine Parts

7n4837 Piston As-Compressor — Cat 1673c 16g

This piston assembly is a critical component within the engine's combustion chamber, responsible for converting the pressure from burning fuel into mechanical motion. Manufactured to meet stringent OEM quality standards, it offers superior wear resistance and precise fitment compared to a worn piston with scoring or a damaged ring groove. Operators may experience a loss of engine power, increased exhaust smoke, or rough engine running when this piston assembly begins to fail.

Piston As-Compressor – Part No 7n4837 – 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 Assembly
MaterialAluminum Alloy
ApplicationEngine cylinder
Service LifeReplace as part of engine overhaul or due to failure
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

A noticeable loss of engine power and increased blue or white exhaust smoke are common initial symptoms of a failing piston assembly. If ignored, the issue can lead to increased oil consumption, rough idling, and potential cylinder wall damage or blow-by. Continued operation risks severe internal engine damage and costly repairs.

Installation Tip

Ensure the cylinder bore is properly honed and cleaned before installing the new piston assembly to ensure correct ring seating. Avoid using excessive force when seating the piston rings into the cylinder bore.

Service Note

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