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Steel pistons reduce weight, friction

Mahle GmbH

What: Monotherm steel pistons for passenger car diesel engines

Innovation: Aluminum pistons are the standard for diesel engines. Mahle's forged steel piston and accompanying pin assembly are lighter than an aluminum assembly. And the steel piston operates with 5 percent less friction than aluminum, helping automakers to meet goals for carbon dioxide reduction.

First customer: Renault

Web site: mahle.com