This quick-coupler socket repair kit restores sealing and latching function in the hydraulic coupler of the host tractor. It contains the internal components that mate with the male coupler tip to establish a leak-free connection. A worn or damaged socket allows fluid leakage at the coupling point, reducing system pressure and causing hydraulic oil loss. As an original AGCO-manufactured kit, the internal seal geometry matches the original socket bore, ensuring the coupler's check valve seats correctly and the locking balls engage at the proper depth. On installation, clean the socket bore and lubricate the new seals before assembly.