Las Vegas (March 15, 2005) - Cummins Inc. (NYSE:CMI) announced that the company is ready to meet the challenge of the Tier 4 Interim off-road diesel emissions rule scheduled to take effect beginning in 2008 continuing through to the end of 2011. Cummins solution will ensure OEMs long-term platform stability in the face of regulation changes for as much as 10 years with the Tier 3 lineup including the new QSB.

From Tier 3 levels, Tier 4 represents a 90-percent reduction in emissions of Particulate Matter (PM) and a 50-percent reduction in emissions of Nitrogen Oxides (NOx). Cummins is focused on achieving customer benefits as well as meeting emissions regulations.

With all key technologies such as fuel systems, electronics, air handling, and filtration all vertically integrated within Cummins, no other engine company has access to the broad range of in-house design integration to meet Tier 4. Better integration means minimizing the cost impact associated with these emissions changes and with Cummins PowerMatch™ software providing integration, the OEM and the operator can be assured that the engine systems are optimized for the greatest reliability and the lowest cost of ownership - not just meeting emissions.

"Cummins is in the best position in the industry to ease the impact of changing emissions regulations for OEMs," said Dave Crompton, Cummins Vice President - MidRange Engine Sales. "Our approach to changes in emissions requirements is to help our customers navigate the regulations; regulations coming with shorter time intervals between them," he added.

Significantly, Cummins Tier 4 technology solutions will be built upon the latest industrial engine platform range launched for the Tier 3 emissions regulations that commenced in January 2005. This engine platform commonality and simplicity will offer OEMs a significant advantage by minimizing installation changes through 2011 and beyond.

The EPA's Tier 4 emissions rule will be phased in on different dates related to engine power bands, requiring varying levels of emissions reduction. Engines rated below 49 horsepower (37 kW) will need to comply by 2008. The most severe emission reduction levels will apply to engines rated over 50 horsepower (37 kW) beginning 2011 with Tier 4 Interim, followed by Tier 4 Final beginning 2014. The regulations cover all diesel-powered construction, agricultural, mining and other off-road machinery.

A key part of the Tier 4 rule is the regulated reduction of sulfur content in off-road diesel fuel from over 3,000 parts per million (ppm) to first 500 ppm and then 15 ppm just ahead of the Interim and Final engine emissions effect dates. This will make it possible for engine emissions solutions to comply with the new EPA standards.

Of similar significance is the scheduling of the Tier 4 emissions effect dates. As one of the largest suppliers of off-road diesel engines, Cummins will be able to utilize the available time to address the added complexity of working with many hundreds of OEM customers and equipment types. The availability of proprietary Cummins software such as PowerMatch and Advisor will help ensure a faster and more effective specification and installation process for these customers.

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 distributor facilities and more than 5,000 dealer locations. With more than 24,000 employees worldwide, Cummins reported sales of $8.4 billion in 2004. Press releases can be found on the Web at www.cummins.com.