YNF17355 bucket cylinder seal kit 4403511 for EX50U excavators, durable hydraulic cylinder repair solution.
OEM reference: 4403511
Machine model: Hitachi EX50U excavator
Complete kit with oil seals, O-rings, and wear rings
Manufactured with high-pressure, oil-resistant sealing materials
OEM-equivalent aftermarket kit with long service life
The YNF17355 bucket cylinder seal kit (4403511) is designed for Hitachi EX50U excavators. This complete kit includes all necessary seals, O-rings, and wear rings to restore the bucket cylinder’s sealing performance, prevent hydraulic oil leakage, and ensure stable bucket operation.
Manufactured with premium rubber, polyurethane, and PTFE materials, the seals provide excellent resistance to oil, high pressure, heat, and vibration. Regular replacement of cylinder seals helps extend the service life of hydraulic cylinders, reduce downtime, and improve machine efficiency.
As an OEM-equivalent aftermarket solution, YNF seal kits are widely chosen by repair shops, contractors, and distributors for their cost-effectiveness and reliable sealing performance.
| Parameter | Details |
|---|---|
| YNF Part Number | YNF17355 |
| OEM Reference | 4403511 |
| Product Type | Bucket Cylinder Seal Kit / Hydraulic Seal Repair Kit |
| Machine Model | Hitachi EX50U Excavator |
| Function | Restores bucket cylinder sealing, prevents oil leakage |
| Material | Rubber, polyurethane, PTFE |
| Resistance | High pressure, oil, heat, vibration |
| Aftermarket Brand | YNF |
| Country of Origin | China |
| MOQ | 1 Kit |
| Shipping Method | Sea, Air, Express |
| Payment Terms | T/T, PayPal, Western Union |
| Application Area | Description |
|---|---|
| Excavator Bucket Cylinders | Provides sealing for EX50U bucket hydraulic cylinders |
| Hydraulic System Maintenance | Prevents oil leakage, ensures smooth bucket operation |
| Preventive Maintenance | Extends cylinder service life, reduces downtime |
| Aftermarket Parts Distribution | Popular spare part for global excavator markets |
Related Products:
Arm Cylinder Seal Kits
Boom Cylinder Seal Kits
Main Pump Seal Kits
Travel Motor Seal Kits
FAQs:
Q: What is the OEM number of this kit?
A: The OEM reference is 4403511.
Q: Which machine does it fit?
A: It fits Hitachi EX50U excavators.
Q: Why replace bucket cylinder seal kits?
A: To restore hydraulic sealing, prevent leakage, and maintain bucket performance.
The YNF17355 bucket cylinder seal kit (4403511) offers a complete hydraulic sealing solution for Hitachi EX50U excavators. With oil-resistant, high-pressure seals and wear rings, it restores the cylinder’s performance and prevents costly oil leaks. YNF aftermarket seal kits are trusted by dealers, contractors, and service centers for their OEM-level performance and affordable pricing.
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