This quick coupler connects hydraulic lines to the tractor’s hydraulic socket, allowing the operator to attach or detach implements without tools. It sits at the implement end of the hose assembly and engages with the mating coupler on the tractor side. The M22 thread and 1.5 pitch match the original socket port, so the coupler seals against the internal O-ring when fully tightened. A worn or damaged coupler can leak under pressure, causing slow implement response and fluid loss. On installation, ensure the mating surfaces are clean and the coupler is tightened to the torque specified for the socket.