CATEngine Parts

1078255 Piston As-(Os 0.25Mm) — Cat 315 315B

This piston assembly is a critical component of the internal combustion engine, responsible for transferring the force of expanding gases to the crankshaft. It is manufactured to meet stringent OEM quality standards, ensuring superior durability and performance compared to worn or damaged pistons which may exhibit scoring or deformation. Operators may notice a loss of engine power, increased exhaust smoke, or abnormal engine noises when a piston begins to fail.

Piston As-(Os 0.25Mm) – Part No 1078255 – 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
MaterialCast Aluminum Alloy
ApplicationEngine Cylinder
Service LifeReplace as part of engine overhaul or when worn
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of piston failure may include a noticeable decrease in engine performance and an increase in blue or white exhaust smoke. If left unaddressed, the problem can lead to increased oil consumption and potential cylinder wall damage. Continued operation with a failing piston risks severe engine damage and costly repairs.

Installation Tip

Ensure the cylinder bore is thoroughly cleaned and inspected for any debris or imperfections before installing the new piston. Avoid forcing the piston into the cylinder bore, as this can cause damage to the piston skirt or the cylinder wall.

Service Note

Inspect cylinder liners, piston rings, and connecting rod bearings for wear during piston replacement.