YB00003778,4390776,4367664,4231543,A810100 Original Centre Joint Seal Kit For Hitachi ZX470‑5G ZX470‑5B Excavator
Worn internal seals will cause centre joint oil leakage, travel circuit cross‑oil, reduced travel power and erratic walking performance. Replace this full seal kit to restore normal swivel joint function. Manufactured to strict OEM dimensions for direct interchange. Each kit undergoes quantity and appearance inspection before packing. Made of premium PU+NBR sealing material, delivers oil‑resistant, wear‑resistant and anti‑aging performance under heavy‑duty construction site conditions. Ready stock available, support bulk wholesale for global excavator spare‑parts dealers and repair workshops.
Note: Please verify kit number YB00003778 and your exact machine model before ordering.
YB00003778 Centre Joint / Swivel Joint Seal Repair Kit
Product Overview
YB00003778 is a complete centre joint(swivel joint) seal repair kit for Hitachi large excavators. This kit assembles all required dust seals, oil seals and O‑rings for centre joint overhaul.
When internal seals wear out, excavator will suffer centre joint oil leakage, cross‑oil between travel circuits, travel power drop and unstable walking performance. Replacing this whole seal kit is the standard solution for centre joint maintenance. Strictly follow OEM dimension, perfect interchangeable for original assembly.
Product Specification Table
| Item | Parameter |
|---|---|
| Kit Part No | YB00003778 |
| Kit Name | Centre Joint / Swivel Joint Seal Kit |
| Kit Composition | 4390776 SEAL;DUST ×14367664 O‑RING ×14231543 SEAL;OIL ×6A810100 O‑RING ×1 |
| Application | Excavator centre joint / swivel joint overhaul repair |
| Fit Machine | Hitachi ZX470‑5G, ZX470‑5B |
| Material | PU+NBR sealing compound |
| Feature | Oil‑resistant, wear‑resistant, anti‑aging |
| Quality | 100% dimension & quantity inspection before shipment |
| Custom Service | Support OEM seal kit, custom mixed seal kits |
| Package | Original style packing / neutral export carton |
Core Advantages
✅ Full‑set one‑stop replacementAll required dust seal, oil seal and O‑rings are included in one kit. No need to source each spare part separately, save ordering time for repair shops and dealers.
✅ OEM‑equivalent dimension toleranceManufactured strictly according to original drawing, direct fit for centre joint assembly, no modification required during installation.
✅ Superior sealing performanceAdopt high‑quality PU & NBR raw material, good oil‑resistance and anti‑aging performance, adapt to heavy‑load construction site working conditions. Effectively stop oil leaking and cross‑oil inside swivel joint.
✅ Strict batch inspectionEach kit is checked for part number, quantity and surface condition before packing, avoid missing pieces. Stable aftermarket supply for global machinery spare‑parts wholesalers.
Application Scenarios
‑ Hitachi ZX470‑5G / ZX470‑5B centre joint overhaul & maintenance
‑ Troubleshooting centre joint oil leakage, cross‑oil, weak travel power
‑ Replacement for aged, hardened, cracked original centre joint seals
‑ Construction machinery aftermarket spare‑parts wholesale
Compatible Models
Fit for Hitachi Excavator: ZX470‑5G,ZX470‑5B
Note: Please confirm kit number YB00003778 and your machine model before purchase to ensure correct fitting.
Custom & Wholesale Service
‑ Bulk wholesale for excavator spare‑parts dealers
‑ OEM service, custom packing and label
‑ Custom‑made various hydraulic seal kits, centre joint kits, cylinder repair kits
‑ Supply supporting parts: bi‑metal bushing, oil seal kits, hydraulic components
Factory & After‑sales
We are professional supplier for Hitachi excavator spare parts, specialized in hydraulic seals, seal kits, bi‑metal bushing and chassis components. Factory direct supply with competitive price. We provide part‑number matching consultation and installation tips. Welcome global buyers for inquiry and bulk orders.
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