CATEngine Parts

375-1396-390-3112 Piston Kit — Cat 311F 312F

This piston kit is a precision-engineered set of components essential for the combustion process within the engine, forming the moving part of the cylinder. Manufactured to meet rigorous OEM material and dimensional specifications, it ensures optimal sealing and power transfer unlike worn pistons that can cause blow-by and reduced compression. Operators may observe a loss of engine power, increased oil consumption, or unusual engine noises such as knocking or rattling when pistons are worn or damaged.

Piston Kit – Part No 375-1396-390-3112 – 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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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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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 Kit
MaterialAluminum alloy with steel inserts
ApplicationEngine cylinder assembly
Service LifeReplace as part of engine overhaul or at 10,000 hrs
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early indications of piston issues include a subtle loss of engine power and a slight increase in exhaust smoke. If left unaddressed, this can progress to significant oil consumption, reduced compression, and potential engine misfires. Continued operation with damaged pistons risks severe internal engine damage, leading to costly repairs.

Installation Tip

Carefully inspect cylinder walls for scoring or out-of-roundness before installing new pistons. Ensure piston ring gaps are staggered correctly to prevent blow-by.

Service Note

When replacing pistons, it is essential to inspect cylinder liners, connecting rod bearings, and crankshaft bearings for wear.