4388027 Blade Cylinder Seal Kit for Hitachi EX120-5 ZX120 ZX135US Excavator

Premium 4388027 Blade Cylinder Seal Kit for Hitachi Excavators

Eliminate hydraulic fluid leaks and restore the powerful grading and leveling capabilities of your excavator with the WINSCHEN premium 4388027 Blade Cylinder Seal Kit. Engineered to withstand the extreme operational pressures, heavy ground resistance, and abrasive environments of earthmoving and construction, this high-quality aftermarket repair kit ensures your Hitachi equipment operates safely and efficiently with zero pressure loss.

Key Features and Selling Points

• Manufactured to strict OEM dimensions, ensuring a precise and seamless fit for the blade hydraulic cylinders used across a massive range of Hitachi EX-5 and Zaxis series excavators.
• Constructed from advanced elastomeric, polyurethane, and heavy-duty PTFE materials to provide exceptional resistance to high hydraulic pressure, continuous rod friction, and extreme thermal variations.
• Effectively eliminates internal fluid bypass and external leakage, maintaining responsive hydraulic control and consistent, powerful blade downforce.
• This comprehensive seal kit includes all essential precision components—such as wiper rings, U-rings, backup rings, O-rings, and seal assemblies—required for a complete and reliable cylinder overhaul.
• A cost-effective, highly reliable aftermarket alternative that meets or exceeds original equipment standards, minimizing your machine’s routine maintenance downtime.

Compatible Equipment Models

Based on official catalog and parts cross-reference data, the 4388027 seal kit services the blade cylinders of the following Hitachi equipment:

• Crawler Excavators (EX Series): EX100-5, EX120-5, EX130H-5, EX135UR, EX140US-5
• Crawler Excavators (Zaxis Series): ZX110, ZX110-3, ZX120, ZX120-3, ZX130-3, ZX130H, ZX135UR, ZX135US, ZX135US-3, ZX160
• Application: Blade Cylinder Hydraulic Service / Rebuild

Specifications

To guarantee 100% fitment, please verify your machine’s model, serial number, and original cylinder configuration with our dedicated support team prior to purchasing. We proudly offer fast and reliable global shipping to keep your projects on schedule.