This high-precision Hydraulic Header Coupling is a core hydraulic connection component exclusively designed for Claas V700 series combine harvesters, corresponding to multiple official OEM part numbers: 6837200, 697988, 1798255.0, 1799816. It is installed at the connecting part of the harvester header and the main hydraulic system, undertaking the key function of hydraulic oil transmission, pressure stabilization and quick connection. The coupling precisely controls the lifting, floating adjustment and angle switching of the cutting header, ensuring the synchronous and stable operation of the header hydraulic system during high-intensity harvesting operations. It is a key wear-resistant replacement part for daily maintenance, overhaul and fault repair of Claas V700 harvesters, which can perfectly replace the original factory parts and restore the original working performance of the equipment.