Isuzu 6BG1 6HK1 Engine 9230429 Hydraulic Relief Valve Spool Original Parts For Hitachi ZX160 ZX180 ZX330 Excavator
Product Information
| Part Name | Relief Valve |
| Part Number | 9230429 |
| Engine Model | 6BG1 6HK1 |
| Brand | Hitachi (100% Original Guaranteed) |
| Place Of Origin | Japan |
| Quality Standard | Genuine Standard |
| Condition | 100% Brand New |
| MOQ | 1 Piece |
| Packaging | Original HITACHI Sealed Packaging with Authenticity Label |
| Compatible Equipment Models | Hitachi (ZX160, ZX180LC, ZX180LC-AMS, ZX180LC-HCME, ZX330, ZX330-3G, ZX350H, ZX350H-3G, ZX350K, ZX350K-3G, ZX350LC-AMS, ZX350LC-HCME, ZX360H-3G, ZX370MTH, ZX500W...) |
Product Features
- The spool body adopts high-precision grinding process matched with precise valve head assembly, ensuring stable pilot pressure regulation. It effectively fixes common problems such as low pilot pressure, heavy control levers, slow action response and pressure fluctuation, and maintains constant pressure of pilot control system.
- Made of high-hardness wear-resistant alloy steel with surface strengthening treatment, resistant to hydraulic oil erosion and abrasion under long-term frequent reciprocating movement. Dimensions strictly follow OEM standards with precise clearance to reduce pilot internal leakage. Direct replacement fits pilot regulator assembly on Hitachi EX-5 and ZX-3 series main control valve.
Part Location Diagram

Friendly Reminder: Please ensure this part number matches your machine model and serial number. We strongly recommend checking with the official parts catalog or providing your machine serial number before purchase to avoid ordering the wrong part.
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