The AF25453 AF25452 FLEETGUARD are precision air filters engineered for heavy-duty engines. Designed to serve construction, agriculture, and mining sectors, they deliver targeted contaminant protection for critical engine components. They maintain consistent airflow while meeting or exceeding OEM specifications, extending equipment service life significantly. For operators facing dusty or high-stress environments, these filters are a reliable choice that reduces maintenance downtime and minimizes repair costs.

Both models leverage premium multi-layered precision filtration media to achieve exceptional purification results. They capture airborne dust, sand, abrasive particles, and fine debris as small as 0.3 microns, boasting a 99.9% filtration efficiency. Adhering to strict ISO 5011 standards, they target contaminants that cause premature engine wear and performance degradation. Moreover, their reinforced media structure resists tearing and clogging—even in extreme dust conditions. With an outside-in flow direction design, they intercept pollutants on the media’s outer layer first. This ensures unobstructed airflow during extended service intervals, optimizing fuel combustion and maintaining reliable engine power output.

The AF25453 and AF25452 feature rugged constructions tailored to heavy-duty operational demands. Their precision radial seal designs form tight, leak-proof fits with filter housings, eliminating bypass gaps that allow unfiltered air to enter engines. Weighing 1.9 lbs (AF25453) and 1.8 lbs (AF25452), both filters have compact yet durable builds: AF25453 offers an overall height of 13.5 in (342.9 mm), outer diameter of 5.5 in (139.7 mm), and inner diameter of 3.3 in (83.82 mm); AF25452 measures 12.8 in (325.12 mm) in height, 5.25 in (133.35 mm) in outer diameter, and 3.1 in (78.74 mm) in inner diameter. Additionally, their corrosion-resistant reinforced housings resist impact, vibration, and extreme temperatures from -25°F to 260°F, maintaining structural integrity on rough job sites or during continuous operation.

These filters offer extensive compatibility with leading heavy-duty equipment brands, making them versatile replacement options. The AF25453 fits seamlessly with Caterpillar 3046, 3054, and C6.6 models, while the AF25452 works with John Deere 5520, 6520, and 7520 series. Beyond that, they serve as direct replacements for Caterpillar part 166-6619 (AF25453) and John Deere part RE504218 (AF25452), with cross-references to Baldwin RS3622, Donaldson P532630, and Wix 46520 filters. In terms of installation, their standardized sizes and straightforward designs enable tool-free, quick replacement—no specialized training required. Furthermore, their lightweight builds ease handling during maintenance, saving technicians time and reducing equipment downtime.

For more details on the AF25453 and AF25452 FLEETGUARD Precision Air Filters, including full compatibility guides and purchasing options, visit: kxfilter.com