CATHydraulic Parts

4211808 Pump Gp-Piston — Cat D8R D8R II

This is a piston pump group designed to generate hydraulic pressure for various machine functions. It is manufactured to meet stringent quality standards, ensuring reliable performance and durability compared to worn units. Symptoms of a failing pump include loss of hydraulic power, slow or erratic operation of implements, and increased fluid temperature.

Pump Gp-Piston – Part No 4211808 – 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.

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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 TypePiston Pump Group
MaterialHardened steel alloy
ApplicationMain hydraulic system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

The first indication of a failing pump may be a noticeable reduction in the speed or power of hydraulic functions. If ignored, this can progress to intermittent operation, complete loss of hydraulic control, and potential overheating of the hydraulic system. Continued use risks severe damage to the pump and other hydraulic components.

Installation Tip

Prime the new pump with clean hydraulic oil before installation to prevent dry starts. Avoid introducing any debris into the pump's inlet or outlet ports during the installation process.

Service Note

Inspect the hydraulic system for contamination and consider replacing the hydraulic filter element when installing a new pump.