One New Aftermarket Replacement Stick (Dipper) Cylinder Seal Kit Fits Caterpillar (Fits CAT) 312 Excavator
This hydraulic cylinder seal kit services the stick (dipper arm) cylinder on the Fits Caterpillar (Fits CAT) 312 track-type excavator. It includes all seals required to rebuild the stick cylinder and restore hydraulic performance. The kit is engineered to fit cylinders with an 80 mm rod diameter and 120 mm bore.
Specifications
- Application: Stick (dipper arm) cylinder
- Rod Diameter: 80 mm
- Bore: 120 mm
- Cylinder Reference: 1251546, 4I8839
Compatible Models
Fits Caterpillar (Fits CAT) Excavators: 311 (serial 9LJ00001-UP), 312 (serial 6BL00001-UP, 6GK00001-UP) – powered by 3054/3064 engine
Replaces Part Number(s):
5I3047, 5I3047-A
New aftermarket replacement part – not remanufactured, not used.






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