Meet the Donaldson primary air filter, meticulously designed to enhance the performance of heavy-duty engines. Its high-efficiency cellulose media ensures optimal filtration across a wide range of applications. Crafted with corrosion-resistant steel liners, this filter provides robust support during operation, maximizing airflow efficiency. The innovative Pleatloc feature maintains uniform pleat spacing, preventing media from bunching and promoting an extended service life. With ISO 5011 standards and the trusted Donaldson brand, this filter is a testament to quality and reliability.