Good used radiator to suit K75; K75C and K75S. These are smaller in width then the K75RT and K100 8v models.
You may need to put another thermostat in them. Thermostat is not covered under Warranty. It is there to fill the hole.
These will most likely not come with the rubber where the bolt goes through to the frame. Most of the time these are damaged so you will need to replace with the one from your radiator.
Photo is a representation only and may not be the one shipped