Hitachi 4289595 Center Joint Seal Kit Description
YNF16744G is a center joint seal kit (4289595) designed for Hitachi excavators. The center joint, also known as the swivel joint or rotary manifold, plays a critical role in hydraulic systems by allowing continuous fluid transfer between upper and lower structures while the excavator rotates. Over time, seals inside the center joint wear out, leading to hydraulic oil leakage, pressure loss, and reduced machine efficiency. This seal kit provides all the necessary sealing components for a complete rebuild, ensuring the joint restores its performance and prevents costly downtime. Manufactured with premium sealing materials resistant to hydraulic oil, heat, and abrasion, YNF aftermarket seal kits are trusted by global distributors, workshops, and heavy equipment owners.
Center Joint Seal Kit Technical Sheet
| Parameter |
Details |
| YNF Part Number |
YNF16744G |
| OEM Part Number |
4289595 |
| Product Type |
Center Joint / Swivel Joint Seal Kit |
| Compatible Brand |
Hitachi Excavators |
| Function |
Prevents hydraulic leakage and restores smooth rotation |
| Material |
High-quality oil- and heat-resistant sealing materials |
| Resistance |
Pressure, wear, heat, hydraulic oil |
| Country of Origin |
China |
| Aftermarket Brand |
YNF |
| MOQ |
1 Kit |
| Shipping Method |
Sea, Air, Express |
| Payment Method |
T/T, PayPal, Western Union |
Center Joint Seal Kit Applications
| Application Area |
Description |
| Excavator Center Joint |
Repairs swivel joint to prevent hydraulic oil leakage |
| Hydraulic System Repair |
Restores pressure and efficiency in hydraulic circuits |
| Preventive Maintenance |
Extends service life by replacing worn seals in advance |
| Workshop & Field Repair |
Used by service shops and fleet maintenance teams |
Hitachi Excavator 4289595 Center Joint Seal Kit Detail Display
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FAQs:
Q: What is included in the 4289595 seal kit?
A: It includes all necessary seals and O-rings required to rebuild the excavator center joint.
Q: Which excavators use this seal kit?
A: It is designed for Hitachi excavators with OEM reference 4289595.
Q: How often should the seals be replaced?
A: Replacement is recommended when hydraulic oil leakage occurs or as part of preventive maintenance.
