1289278 Kit Seal-Hyd Fits Caterpillar Models
1289278 Kit Seal-Hyd Fits Caterpillar Models
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One New Aftermarket Replacement Hydraulic Cylinder Seal Kit for Caterpillar (Cat) 330 Series Excavators
This aftermarket replacement hydraulic cylinder seal kit services the arm cylinder on Caterpillar (Cat) 330 and 330L track-type excavators. Designed as a high-temperature hydraulic seal kit, it restores proper sealing function to the arm cylinder assembly, helping to eliminate hydraulic fluid leaks and maintain full digging force. The kit is intended for machines powered by the 3306 engine.
Specifications
- Application: Arm cylinder hydraulic seal kit
- Design: High-temperature rated hydraulic seals
- Engine: Caterpillar 3306
Compatible Models
Caterpillar 330 Series Track-Type Excavators (Serial No. 8RL00001-UP, 3306 Engine): 330, 330L
Note: This kit is fitment-specific to the 8RL serial number prefix. Verify your machine serial number before ordering to ensure correct application.
Replaces Part Number(s):
1289278, 128-9278
Aftermarket Interchange Numbers
CA1289278
New aftermarket replacement part - not remanufactured, not used.



