During the past decade, Penn Detroit Diesel Allison has evolved into a company that provides a vast
array of world class products and services to an expanded base of customers. As a result of this evolution,
we have changed the name of our company to Penn Power Group which better defines our company’s
focus and the services we provide.
Our rich history began over fifty years ago with Engines Incorporated which began our relationship with
Detroit Diesel and Allison Transmission products in the eastern Pennsylvania region. In 1977, Engines Inc.
was sold and renamed Penske Detroit Diesel Allison and in 1983, a management buyout took place and
the company was renamed Penn Detroit Diesel Allison.
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