One New Aftermarket Replacement Boom Cylinder Seal Kit Fits Caterpillar (Fits CAT) Mini Excavators

This hydraulic boom cylinder seal kit is a direct replacement Fits Caterpillar part number 278-8641 (2788641). It fits the boom cylinder on Fits CAT mini excavators and is designed to restore proper hydraulic sealing, prevent oil leakage, and maintain working pressure in the boom hydraulic circuit.

Compatible Models

Fits Caterpillar Mini Excavators: 303C CR, 303.5C CR, 303.5D, 303.5E, 304D CR, 304E

Replaces Part Number(s):

2788641, 2788641-A, 278-8641

Aftermarket Interchange Numbers

CA278-8641, CA2788641

New aftermarket replacement part - not remanufactured, not used.