Fleetguard® Direct Flow™ Air Cleaners

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Donaldson Blue® replacement filters for Fleetguard® Direct Flow™ Air Cleaners incorporate Donaldson’s most advanced air filtration innovations: RadialSeal™, PowerCore® and Ultra-Web® technologies.


Fleetguard Direct Flow™ Air Cleaners used in off-road applications; heavy-duty construction, mining and ag equipment, plus compressors and generator sets.


Proven PowerCore® Filter Design
Rugged construction holds up in heavy-duty work environments
Dust encapsulation makes servcing easier and cleaner

Proven Ultra-Web® Nanofiber Media
Protects engines and helps them last longer by delivering better initial and overall efficiency than cellulose media
High dust-holding capacity promotes longer filter life

Proven RadialSeal™ Sealing System
Creates a reliable, vibration-resistant interface between the air cleaner and the filter


Donaldson Blue filters for Fleetguard Direct Flow air cleaners were tested head-to-head against OEM filters. They were bombarded with dust, vibrated and shaken – and then carefully examined. When tested per ISO 5011, Donaldson Blue filters perform well on the important characteristics of dust capture – where they reached a 99.97% overall efficiency – and capacity (filter life). It’s when we compare sealing technology that Donaldson filters really stand out.
Donaldson Blue filters with RadialSeal technology deliver two critical sealing advantages compared to the OEM filter:
50% more sealing area
Up to 2 times more gasket compression around the frame for a sure-fit seal.
Compare this to a thin O-ring design that offers less sealing area and less compression – and it’s easy to see why more sealing area and more compression is better for protecting engines.


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