COLUMBUS, Ind. (September 30, 2002) - Cummins Inc. (NYSE:CUM) announced today that it had received unconditional certification for its heavy-duty ISM engine from the Environmental Protection Agency (EPA). The EPA approval certifies that the ISM complies with the strict new emission standards agreed upon by the industry.

"The ISM certification gives Cummins customers a complete line of certified and compliant heavy-duty engines to choose from, without concern for paying penalties," said Thomas Kieffer, Cummins executive director - marketing.

The proven 11-liter ISM engine, with horsepower (hp) ranging from 280-hp to 385-hp, complements the Cummins ISX product in meeting the needs of short-haul trucking, vocational and bus customers. Cummins also will offer the ISM in a restricted 400-hp and 450-hp for motorcoach, recreational vehicle and fire truck applications.

This heavy-duty engine is included in the Uptime Guarantee program Cummins recently announced to assure the trucking industry that the new engines will meet and exceed customer performance and reliability needs. Under the guarantee, if any part on a customer's ISX or ISM engine fails and can't be repaired within a 24-hour period, Cummins will reimburse the costs of a rental vehicle. The Uptime Guarantee applies to Cummins ISX and ISM engines purchased between Oct. 1, 2002, and March 31, 2003, with coverage from the date of purchase through Dec. 31, 2003.

"The ISM utilizes the same cooled exhaust gas recirculation subsystem design used on the ISX and ISB engines. This common approach provides customers with the most reliable and best performing engines in their class," noted Kieffer.

A global power leader, Cummins Inc. is a corporation of complementary business units that design, manufacture, distribute and service electrical power generation systems, engines and related technologies, including fuel systems, controls, air handling, filtration emissions solutions. Headquartered in Columbus, Indiana (USA), Cummins serves its customers through more than 500 company-owned and independent distributor locations in 131countries and territories. With 24,900 employees worldwide, Cummins reported sales of $5.7 billion in 2001. Press releases by fax may be requested by calling News on Demand (toll-free) at 888-329-2305. Cummins home page can be found at www.cummins.com.