Columbus, Ind. (August 2, 2004) - Cummins Inc. (NYSE:CMI) unveiled a 3000 horsepower (hp) rating for the designed-for-mining QSK60 diesel engine. The rating was developed specifically to meet the reliability and high power density requirements of 300-ton haul trucks. This new engine rating will be available in 2006 and will meet the Environmental Protection Agency's (EPA) Tier 2 emissions requirements.

The Tier 2 QSK60 will utilize a designed-for-mining common-rail fuel system with full-authority electronic control over fuel timing, quantity, pressure, delivery rate shape, and the number of injection events is a must for optimum performance and emissions compliance. This system has full control over the fuel injection event in relation to timing, quantity, pressure and number of injections. Cummins Tier 2 QSK60 achieves a 30% reduction in emissions of oxides of nitrogen (NOx) and 65% reduction in Particulate Matter (PM), while maintaining reliability and durability in extreme operating environments, and still allowing customers to use widely available diesel fuels.

The 60-liter, V16 configuration features Ferrous Cast Ductile (FCD) pistons that allow for high fuel injection pressures and increased power output with exceptional durability while reducing the maintenance costs. The Tier 2 QSK60 will be offered with a choice of either a single-stage or dual-stage turbochargers.

"We've invested in the right products, proven technology, people, and infrastructure to help our customers achieve the uptime they require," said Ed Claypool, General Manager of Cummins Mining Business. "Cummins remains focused on providing customer support and technology to the mining market that's better than anybody else," he added.

Cummins engines will feature an in-cylinder solution with minimal OEM installation impact. Cummins has been able to optimize the in-cylinder combustion system to meet Tier 2 NOx levels without the need for aftertreatment or other external hardware. In addition, the Cummins Tier 2 advanced combustion solution provides a stable engine system that will carry customers through to Tier 4 in 2011.

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 its customers through more than 680 company-owned and independent distributor locations in 137 countries and territories. Cummins also provides service through a vast dealer network of more than 5,000 facilities in 197 countries.

With more than 24,000 employees worldwide, Cummins reported sales of $6.3 billion in 2003. Press releases can be found by accessing the Cummins home page at www.cummins.com.