Rumpfgruppe GT3071R ? 700177-4 Garrett cartridge GT3071R Originalcore assembly Part number: 835999-1 / 700177-3 (trim 84) The core assembly (CHRA) is the central part of the turbocharger with the two blades (compressor and turbine), which also contains the bearing. When ball-bearing turbochargers suffer bearing damage, it is only possible to replace the entire Garrett fuselage assembly. So far, individual components of these turbochargers are not available. Garrett turbocharger CHRAs other than those listed here are available on request.