In short: kit 4436496 for the Hitachi ZX850H excavator.
The arm cylinder pulls the stick in and pushes it out. That crowd motion is what you dig with, and the seals feel every stroke.
Match these before you buy:
- Your machine is a Hitachi ZX850H.
- The part number of your cylinder lines up with 4436496.
- The serial number agrees, if the part number is unclear.
OEM reference: 4436496
Fits: Hitachi ZX850H
Used on: Arm cylinder
Also listed as: 4331077 and 4360555
Made from: PU, Viton and NBR rubber
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