A troubled air bag maker has named its top quality executive to its board to give him more authority.

Takata, whose potentially explosive inflators are behind the biggest product safety recall in US history, has promoted Hiroshi Shimizu, who has overseen quality assurance since 2013, Bloomberg News reported.

The senior vice president is one of three new appointments to the board, according to a filing to the Tokyo stock exchange. Former president Stefan Stocker will step down from the board when his term ends this month, the report said.

Stocker, who started his career at Bosch, joined Takata as an executive officer in February 2013 when the supplier said the move was part of plans to strengthen the operational structure of the company which was then facing increasing recalls by its key customers to replace faulty air bag inflators.

Takata spokesman Hideyuki Matsumoto declined to comment to Bloomberg if Stocker would remain with the company after he leaves the board.

Takata is also boosting chief financial officer Yoichiro Nomura to the board but the moves need shareholder approval expected later this month.