This repair kit contains the seals and components needed to restore the hydraulic coupler to its original operating condition. It is installed in the coupler body where the male tip locks in; the internal seals prevent fluid leakage and maintain coupling pressure during connection and disconnection. A worn or degraded seal set causes external drips and allows air ingress, which leads to spongy actuator response and reduced system efficiency. As an original AGCO kit, the elastomers are compounded to match the original hardness and swell characteristics, ensuring the coupler's internal check valve seats correctly without premature bypass. On installation, clean the coupler bore thoroughly and lubricate the new seals with clean hydraulic fluid before assembly.