Donaldson Announces Expanded Aircraft PMA Eligibility for GA Engine Intake Filters

MINNEAPOLIS, MN – July 24, 2007 – Donaldson Company (NYSE:DCI), a leading, worldwide manufacturer of filtration systems and parts, is announcing that over 100 additional general aviation aircraft models can benefit from using our high-performance "dry" media engine intake filters, due to recently expanded FAA/PMA eligibility. These products are highlighted on a free poster available at the Donaldson booth at Experimental Aircraft Association's 55th annual EAA AIRVENTURE OSHKOSH 2007 show held July 23 – 29 in Oshkosh, Wisconsin. Donaldson Booth 4106 is located in the Aircraft Exhibit Hangar D.

The dry type, synthetic media incorporated into each Donaldson high-performance engine intake filter provides superior engine protection and sets the standard for filtration performance. This advanced technology distributes the fibers evenly with deeper filter pleats, drastically improving airflow without relying on sticky oil to capture particles like "wet" or oiled filters. Popular Donaldson part numbers like P107150, P107172 and P106150 are included in the FAA/PMA eligibility expansion.

Donaldson engine intake filter are available from several different aircraft part distribution outlets including Aerospace Products International, Ram Aircraft, Aircraft Spruce, Airparts Company, Modern Aero, RAPID, Piper, Mooney and Cessna Parts Distribution Networks.

EAA AIRVENTURE OSHKOSH is the World's Greatest Aviation Celebration and EAA's yearly membership convention. For more information about the show visit www.airventure.org.

If you cannot attend the show, but would like to receive a free poster, contact Donaldson toll free at (866) 323-0394.

For more information, visit the Donaldson Aerospace website at www.donaldson.com/en/aircraft or contact Donaldson toll free at (866) 323-0394.