This quick coupler connects hydraulic lines to the tractor's hydraulic socket. It allows the operator to attach or detach implement hoses without tools, using a spring-loaded locking mechanism that seals the port when disconnected. The M22 thread pitch matches the socket's internal thread, and the outer diameter seats into the housing bore. A worn or contaminated coupler can cause leakage at the connection point or fail to lock, resulting in pressure loss at the implement. The original manufacturer's thread and seal geometry ensure the coupler seats correctly in the housing without cross-threading.