Core group (CHRA) tight. Center Housing Rotating Assembly. Colloquially, it is the heart of the turbocharger Purchasing and replacing the core assembly (CHRA) is much cheaper than purchasing a new turbocharger. The effect remains the same provided that the materials, quality and balancing are as in the OEM product. We attach great importance to the quality and preparation of our product so that it meets even the most demanding customers. If you are not sure that you are purchasing the right fuselage group for your vehicle, please contact us by phone or email. Best quality, competence and experience for over 20 years.