Here are new replacement VGT nozzle sweeper rings for the 6.7 Cummins 2007.5 - 2025 (3rd, 4th, and 5th gen Cummins . The smaller sweeper ring goes on the bearing housing and sweeps the inside of the nozzle and the larger VGT nozzle ring sweeps the outside of the nozzle ring. These nozzle ring keep the VGT nozzle centered and clean.