Dana Corporation (NYSE: DCN) today announced that it has signed a definitive agreement to purchase an interest in GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie, a manufacturer of transmissions, transaxles, axles, and other automotive components. Headquartered in Ludwigsburg, Germany, the company had sales of $750 million in 1999. Financial terms of the agreement were not disclosed.