The JCB KBN0866 Seal Cushion is a genuine OEM component designed for hydraulic cylinder applications in various JCB machinery. This essential part provides cushioning for the piston, ensuring smooth operation and preventing damage at the end of the stroke. It is compatible with JCB 3CX and 4CX backhoe loaders, as well as JS130, JS160, and JS200 excavators, ensuring precise fit and reliable performance.