CATEngine Parts

380-9470 Stick Cylinder Seal Kit — Cat Loader 416E 416F 422E 428E

This Stick Cylinder Seal Kit is designed to replace worn or leaking seals within the hydraulic cylinder responsible for controlling the boom or stick movement on loaders. Manufactured to OEM specifications, it ensures a tight seal, preventing hydraulic fluid loss and maintaining optimal cylinder performance, unlike a degraded seal. Operators may notice slow or jerky stick movement, external hydraulic fluid leaks around the cylinder rod, or a loss of lifting power when this seal kit fails.

Stick Cylinder Seal Kit – Part No 380-9470 – 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 TypeHydraulic Cylinder Seal Kit
MaterialNBR Rubber and Urethane
ApplicationStick Hydraulic Cylinder
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing seal kit is often a visible hydraulic fluid leak from the cylinder rod or a slight hesitation in stick movement. If ignored, the leak will worsen, leading to a significant loss of hydraulic pressure and power, making it difficult to operate the boom or stick. This can result in reduced machine productivity and potential damage to the cylinder bore from lack of lubrication.

Installation Tip

Thoroughly clean the cylinder bore and rod before installing the new seals to prevent any debris from causing premature failure. Ensure the new seals are properly oriented according to the manufacturer's instructions to prevent damage during installation.

Service Note

When replacing the stick cylinder seal kit, inspect the hydraulic fluid for contamination and consider replacing the hydraulic filter element.