Marelli, a key supplier for Stellantis and Nissan Motor Co, was created in 2019 after Fiat Chrysler Automobiles sold its car parts unit Magneti Marelli to Calsonic Kansei for 5.8 billion euros ($6.5 billion).

"We are fully prepared to extend additional financing to Marelli, as needed, to ensure that the company operates its business as usual through the proceedings," a KKR spokesperson said.

(Reporting by Miho Uranaka and Makiko Yamazaki; Editing by Edmund Blair)