CATHydraulic Parts

3412807 — Caterpillar Cylinder & Seal Gp-Stick 3412807

This Caterpillar Cylinder and Seal Group for the stick is a crucial part of the excavator's hydraulic system, enabling the precise movement and positioning of the boom. Manufactured to meet rigorous OEM quality standards, it provides robust performance and longevity superior to worn or leaking seals and cylinders. Operators may observe slow or jerky stick movements, inability to hold position, or hydraulic fluid leaks from the stick cylinder when this group fails.

Caterpillar Cylinder & Seal Gp-Stick 3412807 – Part No 3412807 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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Related CAT Parts

From the same category — may also be needed

7c-8242
Hydraulic Oil Cooler
1529148
Cylinder Gp- Boom
3628488
Caterpillar Cylinder Gp- Stick 3628488
3P7958
Gear Pump-Hydraulic
0S1625
Cap Screw
3G5867
Gear Pump-Hydraulic

Browse all CAT Hydraulic Parts →

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Installation & Application Notes

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeStick Cylinder and Seal Group
MaterialSteel, NBR rubber
ApplicationExcavator stick hydraulic system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early indications of failure include minor hydraulic fluid seepage around the cylinder rod or a slight hesitation in stick movement. If unaddressed, the problem can progress to significantly reduced lifting capacity, inability to hold the stick in a set position, or audible hydraulic system noise. A severely failed cylinder can lead to uncontrolled stick movement, posing a risk to the operator and surrounding environment.

Installation Tip

Thoroughly clean the cylinder bore and rod before installing new seals to prevent damage and ensure a proper seal. Ensure the cylinder is fully retracted or extended as per service manual instructions before final connection of hydraulic lines.

Service Note

Inspect the hydraulic fluid, filters, and the boom cylinder seals when replacing the stick cylinder and seal group.