Two major automakers told the U.S. Congress on Tuesday that they are replacing Takata Corp.'s air bag inflators with units from other manufacturers amid growing concerns about the safety of Takata's product.

Executives of FCA U.S. LLC and Honda Motor Co. were speaking during a Senate hearing over the massive global recalls of the company's air bags. Eight deaths in the U.S. and Malaysia are blamed on shrapnel from faulty Takata inflators.

Scott Kunselman, senior vice president of FCA, formerly known as Chrysler Group LLC, told the hearing that the U.S. automaker "is replacing all driver's side inflators involved in the recall with an alternate and permanent design" provided through U.S.-based TRW Automotive Inc.