Garrett ball bearing CHRA, 60-1 compressor wheel (for T04S housing), P-trim turbine wheel. Fully assembled and balanced backplate. Just swap end housings and go. Uses ATP-OIL-021 oil inlet fitting. T3/4 drain flange. Coolant in/out required (14mm threads - same as GT series ball bearing). Nice "drop-in" replacement for an exisiting T series turbo using this same wheel combination. 550HP