This repair kit is designed for the starter motor solenoid on Discovery TD5 2.5 diesel vehicles.It addresses the common failure mode of worn solenoid contacts and plunger within the starter motor assembly.The kit includes replacement contacts and a plunger assembly that fit inside the existing solenoid housing to restore starter motor.It is compatible with starter motors using part number 228000-7220.The components are made of metal and are intended to replace the failed internal parts without requiring full starter motor replacement.All necessary parts are included for this repair.