Donaldson Blue® air filters with Ultra-Web® fine fiber technology protect engines by providing better initial and overall efficiency compared to conventional cellulose media. We invented air filters for heavy duty diesel engines over 100 years ago and were the first to develop fine fiber air filter media for diesel engines over 20 years ago. Today, we're continuing to innovate with Ultra-Web® HD, purpose-built to perform better in extremely dusty environments.

Available Media Types
• Ultra-Web® Fine Fiber Technology
• Engineered to perform in extreme temperature and humidity conditions, unlike ordinary fine fibers
• Proven use in diesel engines for nearly two decades
Contact us for more information!