The Donaldson P102745 is a genuine Radialseal primary (outer) air filter designed for superior heavy-duty air filtration. Featuring a robust cellulose media, it effectively captures contaminants with 99.9% efficiency, protecting engine components and extending service life. With an outer diameter of 144.5 mm, an inner diameter of 88.9 mm, and a length of 304.8 mm, this filter ensures optimal airflow and reliable performance in demanding environments.