TAMPA, Fla. (February 12, 2006) - Cummins Inc. (NYSE:CMI) announced today the readiness of its North American Heavy-Duty on-highway engine product line to meet the U.S. Environmental Protection Agency (EPA) and California Air Resources Board (CARB) emissions standards for 2007 during the American Trucking Associations Annual Leadership Meeting in Tampa, Fla.


Cummins Heavy-Duty product line, including the ISX and ISM engines, features an integrated - and highly successful - emissions reduction approach. Validating that its 2002 technology solution is also the right solution for 2007, Cummins will continue to use its proven cooled Exhaust Gas Recirculation (EGR) technology with the addition of exhaust aftertreatment provided by the integrated Cummins Particulate Filter and a crankcase ventilation system.


According to Ed Pence, Cummins Vice President and General Manager of Heavy-Duty Engine Business, "For 2007, we'll continue to deliver certified and compliant engines with the proven technology that so many successful fleets are already using to their advantage - for optimal reliability, durability, fuel efficiency and low cost of ownership."


Steve Charlton, Cummins 2007 Heavy-Duty Program Leader, said, "At the heart of our engine system is our proven VG Turbo. And at the heart of our aftertreatment system is a DOC (Diesel Oxidation Catalyst) and diesel particulate filter. The engine and aftertreatment perform as a system to meet the 2007 emissions standards and


maintain fuel consumption comparable to current levels. System integration is a key to success in 2007, and Cummins is the only manufacturer with the key disciplines to design and manufacture it all in-house. Incremental improvements for the ISX and ISM for 2007 include an electric actuator for the VG Turbo which provides faster response and improved precision in adjusting airflow to the engine, improved EGR subsystem with a high-performance cooler, and a faster ECM (Electronic Control Module)."


The Cummins Particulate Filter works together with the engine as an integrated system (both are controlled by a single ECM). The filter removes particulate matter from the engine exhaust by passing the exhaust gas through a ceramic wall-flow filter. The particulate matter is collected in the filter and later oxidized to produce clean exhaust at the tailpipe. The Cummins Particulate Filter's primary mode of operation - over 85% of the time in most applications - is passive regeneration, which automatically occurs during engine operation.


As part of its complete aftertreatment solution, the Cummins Particulate Filter provides active regeneration if passive regeneration does not maintain low carbon loading. The ECM will initiate an active regeneration event so the catalytic reaction can take place. This infrequent event is completely transparent to the operator.


The Cummins Particulate Filter is designed to last the life of your engine. Maintenance will be required to remove the ash content; maintenance intervals will vary by duty cycle, but could be up to 400,000 miles (640,000 km) in most line-haul operations. The Fleetguard® Enviroguard™ coalescing filter captures and filters crankcase emissions. It requires changing every third or fourth engine oil change. Oil and oil filter change intervals will remain the same in 2007.


Available in limited production in fourth quarter 2006, both the ISX and ISM for 2007 will feature a full range of ratings.


Cummins Inc., a global power leader, is a corporation of complementary business units that design, manufacture, distribute and service engines and related technologies, including fuel systems, controls, air handling, filtration, emission solutions and electrical power generation systems. Headquartered in Columbus, Indiana (USA), Cummins serves customers in more than 160 countries through its network of 550 company-owned and independent distributor facilities and more than 5,000 dealer locations. Cummins reported net income of $550 million on sales of $9.9 billion in 2005.