KYB MAG-33VP-650G 4671390 9279324 final drive for Hitachi ZX40U-3 ZX48U-3 ZX50U-3 ZX52U-3 ZX55UR-3 ZX60USB-3 ZX65USB-3 mini excavator
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OEM Numbers: 4671390, 9279324Model: KYB MAG-33VP-650G (also MAG-33VP-650F / 650G‑H1)Type: Integrated travel motor + planetary reducer (Nachi/KYB OEM)Weight: ~55–60 kgApplication: 4–6 ton Hitachi mini excavators
1. Compatible Hitachi Models
ZX40U-3 / ZX40U-3U / ZX40U-5A
ZX48U-3 / ZX48U-3F / ZX48U-5A
ZX50U-3 / ZX50U-3F / ZX50U-3U / ZX50U-5A
ZX52U-3 / ZX52U-3F
ZX55UR-3 / ZX55UR-3D
ZX60USB-3 / ZX60USB-3F
ZX65USB-3 / ZX65USB-3F
2. Part Number Cross Reference
Hitachi OEM: 4671390, 9279324, 1185401
KYB model: MAG-33VP-650G, MAG-33VP-650F, MAG-33VP-650G‑H1
Alternate: B0240-33129, B0240-33069
3. Key Specifications (MAG-33VP-650 series)
Max output torque: 6,370 N·m
Max pressure: 27.5 MPa
Displacement: ~1,200 cm³/rev
Max speed: 60 rpm
Mounting: 12‑bolt, PCD 212 mm (sprocket) / 192 mm (frame)
Two‑speed: High/low (rabbit/turtle)
4. Features
Genuine KYB hydraulic motor + planetary gears
Integrated design, compact & high torque for 4–6 ton machines
Exact bolt pattern & port layout, 1:1 direct fit
Factory prefilled gear oil, ready for installation
Durable sealed design for heavy‑duty mini‑excavator use
Fits left & right sides (identical)
5. Supply & Warranty
Stock in Guangzhou, ship in 1–3 working days
Condition: New OEM / aftermarket equivalent
Warranty: 12 months
Packing: Export wooden crate
6. FAQ
Q: 4671390 and 9279324 the same?A: Yes, both refer to the same MAG-33VP-650G final drive assembly.
Q: Does it replace older MAG-33VP-550?A: No—550 is for ZX40U-2/ZX50U-2; 650G is for ‑3 series (higher torque).
Q: Can you verify with my machine serial number?A: Send serial number for free fitment check.