WASHINGTON (AP) — The additional air bag inflator recall by Takata is now raising questions about the auto industry’s ability to produce and distribute the necessary replacement parts.

Prodded by the U.S. government, Takata is adding up to 40 million air bag inflators to an already massive recall. The recall of inflators that can explode with too much force and hurt people was already the largest in U.S. history.

Now it’s become a race against time to replace the inflators before they reach six years old, when the risk of rupture increases. Even before yesterday’s expansion, it would have taken until the end of 2017.

Other inflator manufacturers which already are making replacement inflators, have agreed to join Takata to produce even more, Upham said.

Still, the government now says it will take until the end of 2019 to finish the recalls.

But two years after the big Takata recalls began, automakers have only replaced 28 percent of the recalled inflators due to a lack of replacement parts and difficulty in finding owners and persuading them to get cars repaired.

At least 11 deaths and more than 100 injuries worldwide have been blamed on the Takata parts.