JCB 550-42855 Bucket Cylinder Seal Kit

This hydraulic cylinder seal kit is engineered for the bucket cylinder on JCB backhoe loaders. The kit includes all essential sealing elements required for a complete cylinder rebuild: rod seals, piston seals, wipers, wear bands, O-rings, and backup rings. It is designed to restore full hydraulic performance, prevent fluid leakage, and ensure reliable operation of the loader bucket function under high-pressure conditions. Compatible with JCB backhoe loader models including 3CX, 3DX, 3DXHM, 3DXL RCP, 3D, 3DX SUPER, 4DX, 3DX ED, and 3DXL. Direct replacement for OEM part number 550/42855. Verify cylinder bore and rod diameter prior to installation to ensure correct fitment.