The disclosure provides an adaptor apparatus for a downhole artificial lift system. The apparatus includes an upper adaptor section and a base adaptor section. The upper adaptor section includes a top connector portion for connecting to first equipment, and a neck portion below the top connector portion. The base adaptor section includes a bottom connector portion for connecting to second equipment. The base adaptor section and the neck section define a longitudinal fluid passage therethrough. The upper adaptor section includes slots extending from the fluid passage to an outer surface of the neck. The upper adaptor section also includes a plurality of fluid channels recessed in the outer surface of the upper adaptor piece.