Press Release Details

FOR IMMEDIATE RELEASE

MINNEAPOLIS, Dec. 14 — Continuing in its ability to develop innovative air filtration systems, Donaldson Company, Inc. is introducing Donaldson TopSpin™, a self-cleaning air intake system pre-cleaner. Donaldson TopSpin, now available in 4 models, extends air filter life and boosts overall system efficiency and performance by automatically separating and discarding contaminants and debris before they meet the primary air filter. Donaldson Company, Inc., a leading manufacturer of filtration systems and replacement parts, continues to develop products like Donaldson TopSpin to keep pace with rapid changes in vehicle operating requirements.

Donaldson TopSpin air intake system pre-cleaners separate up to 99 percent of large debris and 85 percent of coarse air contaminants — among the best efficiency in the market — reducing engine wear and overall operating costs. The Donaldson TopSpin air intake system pre-cleaner meets OEM size and performance requirements while its aerodynamic propeller design delivers quiet operation. The pre-cleaner's translucent housing enables visual confirmation of separation effectiveness and its metal-free body and durable construction tolerates all types of operating environments including moisture, allowing it to perform well in rain, snow and heavy dust conditions.

"Maximizing equipment protection, while minimizing the need for regular service required an optimized intake system design," said Marty Barris, director of air filtration applications and development, Donaldson Company. "TopSpin delivers superior separation capability, with the lowest restriction, resulting in extended air intake service intervals, less engine wear and lower equipment life-cycle costs."

Donaldson Company, Inc., headquartered in Minneapolis, Minn., is a leading worldwide provider of filtration systems and replacement parts. Founded in 1915, Donaldson is a technology-driven company committed to satisfying customer needs for filtration solutions through innovative research and development. Donaldson serves customers in the industrial and engine markets including dust collection, power generation, specialty filtration, off-road equipment and trucks. More than 8,200 employees contribute to the company's success at 40 manufacturing locations around the world. In fiscal year 2001, Donaldson reported record sales of more than $1.1 billion and achieved its 12th consecutive year of double-digit earnings growth. Donaldson is a member of the S&P MidCap 400 Index and Donaldson shares are traded on the New York Stock Exchange under the symbol DCI. Additional company information is available at www.donaldson.com.