CATEngine Parts

2846039 Skirt-Piston — Cat 385B 5090B

This piston skirt is a critical component of the piston assembly within the engine, designed to reduce friction and noise within the cylinder bore. Manufactured to meet stringent aftermarket standards, it provides durable wear resistance and proper fitment, unlike a worn or damaged skirt that may cause piston slap or excessive oil consumption. Operators may notice increased engine noise, particularly a knocking sound, or a noticeable increase in oil consumption if this component is failing.

Skirt-Piston – Part No 2846039 – 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 Skirt
MaterialAluminum Alloy
ApplicationPiston Assembly
Service LifeReplace during engine overhaul or as needed
CompatibilityCTP aftermarket replacement
ConditionNew — CTP aftermarket replacement

Failure Symptoms

Early signs of a failing piston skirt may include a light knocking sound from the engine, often referred to as piston slap, especially when the engine is cold. As wear progresses, this noise will become more pronounced, and oil consumption may increase significantly. Continued operation risks damage to the cylinder walls and other internal engine components.

Installation Tip

Ensure the piston is clean and free of any burrs or sharp edges before attaching the skirt. Avoid using excessive force when fitting the skirt to the piston, as this can damage the skirt or the piston itself.

Service Note

When replacing piston skirts, it is highly recommended to inspect the cylinder walls for wear or scoring and check the piston rings for proper tension.