The veteran communications executive is back at the automaker after her shocking 2015 arrest in Japan on suspicion of drug possession, resignation and release 20 days later without being charged.
China is Porsche biggest single market with sales up 8 percent in 2021.
David Slump succeeds Beda Bolzenius at the helm of the Japan-based lighting and sensor maker. Marelli is wholly owned by KKR, which is targeting a position among the top global suppliers.
Longtime comms exec Wendy Orthman is elevated into the new job at the Nissan luxury brand.
Current GM International chief, Steve Kiefer, has elected to retire after four decades with the automaker. Amin's promotion and Kiefer's retirement are effective April 1.