LOUISVILLE, Ky. (March 25, 2008) - Cummins Inc. (NYSE:CMI) announced today, at the Mid-America Trucking Show, two new ComfortGuard™ APU solutions that are compliant to meet the 2008 California Air Resources Board's (CARB) idle reduction regulation.


The new CARB idle reduction regulation, which went into effect on January 1, 2008, established more stringent standards to further reduce emissions by limiting the idling of new and in-use diesel-powered trucks. This new California regulation also requires that diesel-powered Auxiliary Power Units (APU) such as Cummins ComfortGuard have exhaust aftertreatment. Cummins ComfortGuard will be available with two options to meet these new, more stringent emissions criteria: 1) a stand-alone particulate filter on the ComfortGuard APU, or 2) a Cummins engine installation kit to route the ComfortGuard diesel exhaust gas into the Cummins Particulate Filter. The integrated kit for the ISX engine has been approved by CARB. Both options will be in production by the end of June 2008.


"Cummins ComfortGuard APUs offer the best solutions for a vast majority of trucks on the road," says Shawn Wasson, APU business leader for Cummins Inc. "These new 2008 CARB-certified APUs will give drivers cost-effective options to idling when necessary, with increased benefit to the environment."


The new ComfortGuard APUs meet all Cummins standards for performance as well as all criteria for compliance with the new CARB regulations.


Cummins ComfortGuard APUs feature a two-cylinder low-emissions diesel engine and either a regenerative DPF or an exhaust adapter kit for use with 2007 Cummins ISX engines. Equipped with a Cummins alternator, the APU produces 4,000 watts at 120 volts, 60 Hz AC, and has exceptional voltage and frequency stability for sensitive appliances and electronic equipment. It also produces up to 40 amps at 12 volts DC for charging the truck's batteries, and powering lights and fans. Additionally, the ComfortGuard APU can pay for itself in 18 months or less.


"Cummins is the only manufacturer with experience in the design and production of all the components in an APU - diesel engines, diesel exhaust aftertreatment systems, alternators and controls," says Wasson. "That experience is critical to designing products that offer superior performance, low maintenance and cost-saving advantages for the trucking industry."


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 $739 million on sales of $13.05 billion in 2007. The Cummins ComfortGuard APU system is manufactured with the expertise of the company's Onan® brand. Onan mobile generators are used in the recreational vehicle, marine and fire markets, and have a long- standing reputation for quality. Press releases can be found on the Web at cummins.com and everytime.cummins.com.