MINNEAPOLIS (Oct. 12, 2006) – Donaldson Company Inc. (NYSE: DCI), the filter media specialist, launched an improved medium-flow fuel filter with modular features. This filter is designed to be a cost-effective, bolt-on replacement to existing medium-flow filters.

The modular filter is a derivative product with a flexible design allowing the filter to satisfy a variety of cost needs and performance specifications. A single-base head assembly is used with the modular components, which include a water sensor, electrical heater, visual water bowl, manual priming pump, and life indicator (electronic or visual). Additionally, the filter can feature a Donaldson Twist&Drain™ valve, interchangeable between the clear plastic bowl and the spin-on, to reduce maintenance costs. The mix and match components of this product allow customers to easily build individualized filters.

Modular fuel products are able to utilize different fuel media technologies. Depending on customer requirements, the filter can use traditional silicone treated cellulose or synthetic media, featuring Synteq®, one of Donaldson's newest filter media technologies, which removes contaminants and emulsified water from the fuel stream with a multiple-layered media technology, providing engine fuel pumps and injectors the highest level of protection.

More information on Donaldson's fuel filtration systems can be found at http://www.donaldson.com/en/engine/lube/fuel.html.

[Editor Note: A digital photo of the Donaldson Modular Fuel filtration system is attached and also available upon request. E-mail jkovala@mail.donaldson.com]

About Donaldson Company, Inc.

Donaldson is a leading worldwide provider of filtration systems and replacement parts. We are a technology-driven company committed to satisfying our customer's needs for filtration solutions through innovative research and development. We serve customers in the diesel engine and industrial markets including in-plant air cleaning, compressed air and gas purification, power generation, disk drive filtration, off-road equipment and on-road trucks. Our 11,000 employees contribute to the company's success at over 30 manufacturing locations around the world. Donaldson is a member of the S&P MidCap 400 Index and Donaldson shares are traded on the NYSE under the symbol DCI. Additional company information is available at www.donaldson.com.