A PK quick-change system for interchangeable superstructures (tank/tipper) has been developed and delivered, along with a steel three-way tipper model TK 115-4.4, featuring internal dimensions of 4400 x 2400 x 600 mm. Additionally, the auxiliary frame of the tank was modified and adapted to fit the MAN TGM 18.280 vehicle. The interchangeable setup will be used by Ponikve Krk d.o.o. for various municipal utility operations on the island of Krk.