Allison Transmission Holdings Inc., a global manufacturer of medium- and heavy-duty fully automatic transmissions, acquired the assets and certain liabilities of Walker Die Casting and C&R Tool and Engineering for approximately $103 million. Lewisburg, Tenn.-based Walker produces aluminum castings and supplies essential components for Allison’s core on-highway transmission products. Muscle Shoals, Ala.-based C&R Tool and Engineering supplies metalworking tools for use at Walker and other companies.

Walker Die Casting and C&R Tool and Engineering will be run as Allison Transmission plants and continue to operate in their respective locations.