Revamping of the catalytic cracking reactor block on the conibined G-43-107M/1 unit with introduction of a set of new technological elements and equipment units that significantly increase the efficiency and reliability of operation of the unit and create conditions for its conversion to two-year operation between maintenances is described. Key words: catalytic cracking, reactor block equipment, reactor, regenerator, cyclones, separation unit, reactor stripping section, unit for periodic-unloading of spent catalyst, efficiency of dust removal, naphtha cut, octane number.