The mounting of the turbocharger-to-turbocharger (tc-tc) system, code P51203-38, involves secure and vibration-resistant installation of critical turbocharging components in the MAN L21/31 engine. This arrangement ensures mechanical stability, optimal alignment, and efficient airflow between turbochargers, which is essential for balanced boost pressure and consistent engine performance. Proper mounting safeguards the longevity and effectiveness of the turbocharging system, especially under high-load, high-speed marine engine conditions.