The AF25335 is a high-quality RadialSeal™ primary air filter, commonly cross-referenced to Donaldson AF25335. It is designed to provide excellent filtration for a wide range of heavy-duty agricultural, construction, and industrial machinery. This filter effectively captures contaminants, protecting the engine from wear and extending its lifespan. It is a direct replacement for various OEM part numbers, including John Deere AT175249, Case/IH 87301777, and Caterpillar 1421339, ensuring reliable performance and fitment across multiple equipment brands.