Portland, Ore. – North America’s leading medium- and heavy-duty truck manufacturer Daimler Trucks North America, announced today that it will offer a full line of its own Detroit Diesel engines, as well as Cummins heavy- and medium-duty engines, across its Freightliner, Sterling, Western Star and Thomas Built Buses vehicle range.

The Detroit Diesel DD15, at 14.8L displacement, was launched in October 2007, as the first in a complete line of all new heavy-duty diesel engines that will ultimately power Daimler Trucks offerings around the world. The DD15 utilizes turbo compounding and amplified common rail fuel injection to achieve superior power and fuel economy. Additional variants, at 12.8L (DD13) and 15.6L (DD16) will be introduced at intervals over the coming months, and will supplant current Detroit Diesel and Mercedes-Benz heavy-duty engine offerings in the Daimler Trucks North America stable of commercial vehicles.

The 14.8L ISX heavy-duty diesel engine manufactured by Cummins Inc. will round out the options in Freightliner, Sterling and Western Star Class 8 trucks in the post-EPA10 era. Today, Cummins is Daimler Trucks North America’s exclusive external engine partner in the supply of medium-duty ISB, ISC, and ISL engines for Freightliner trucks and chassis, Sterling trucks and Thomas Built buses in classes 5 through 7.

The Cummins ISX in EPA07 trim will be available in the recently introduced Freightliner Cascadia model, for delivery in January of 2009.

“This decision will complement our current successful and proprietary product line of Detroit Diesel and Mercedes-Benz engines. It will expand and strengthen the range of choices for our customers, and establish Cummins as a full range vendor engine partner,” said Chris Patterson, president and chief executive officer of DTNA. “This action was a result of many months of carefully considered planning and consulting with our key customers to determine engine needs and preferences. We are convinced that expanded engine options will offer the best suite of solutions on the market, bar none,” added Patterson.

Daimler Trucks North America LLC, headquartered in Portland, Oregon, is the leading medium- and heavy-duty truck manufacturer in North America. Daimler Trucks North America produces and markets Class 3-8 vehicles and is a Daimler company, the world’s leading commercial vehicle manufacturer.