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RITO 4451039 Seal Kit Main Pump Hydraulic Pump Seal Kit for Excavator ZX200 ZX200-3 ZX210 ZX210-3 ZX240 Piston Pump Repair Kit

Hydraulic pressure decay and internal oil bypass in piston pumps are commonly linked to seal fatigue, leading to unstable digging force, slow actuator response, and increased system temperature. 4451039 main pump seal kit is designed for Hitachi ZX200, ZX200-3, ZX210, ZX210-3, and ZX240 excavators, restoring internal hydraulic isolation within piston pump assemblies.

  • Item NO.:

    4451039
  • Order(MOQ):

    1
  • Payment:

    T/T, WESTERN UNION, CHINESE BANK,PAYPAL
  • Product Origin:

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

4451039 Seal Kit

 
Product Specifications

Part Number  4451039
Part Name Seal Kit
Compatible Brand Hitachi
Applicable Models ZX200 / ZX200-3 / ZX210 / ZX210-3 / ZX240
Application Excavator
Material NBR / PU / PTFE Composite Sealing Materials
Product Color Mixed (Black / White / Brown)
Working Temperature -35°C to 120°C
Key Function Restores internal sealing balance and hydraulic pressure integrity
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Multi-Point Hydraulic Isolation Restoration

Re-establishes sealing integrity across key internal pump interfaces to stabilize pressure output.

Leak-Free

Pressure Loss Recovery Design

Helps reduce internal leakage paths that directly affect hydraulic force efficiency.

Direct Fitment

High-Compatibility Overhaul Set Configuration

Includes coordinated sealing elements intended for complete piston pump maintenance cycles.

Rigorous Testing

Extended Hydraulic Cycle Stability

Supports consistent pump performance during long-duration excavation and repetitive load operations.

 
 

 

Excavator Hydraulic Part

FAQ


QWhat performance issues indicate seal kit replacement is required?
A: Weak hydraulic output, pressure instability, overheating pump body, or delayed cylinder movement.
 
QWhy does pump efficiency drop even when external parts look normal?
A: Internal seal degradation allows oil bypass inside the pump, reducing effective pressure generation.
 
QWhat is critical during seal kit installation?
A: Absolute cleanliness is required; even minor contamination can damage sealing surfaces immediately after startup.
 
Q: Can this kit fully restore hydraulic pump performance?
A: Yes, if internal components are within acceptable wear limits, sealing restoration can recover original pressure stability.
 
Q: What quality options are available?

A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.

 

Q:Why Choose RITO?
A:Listed Factory
   Stable&Reliable Quality
   OEM Factory for Chinese Top Excavator Brands
   Supplier to Fortune 500 Companies

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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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