The Donaldson Primary Round Air Filter is a highly effective air filter designed specifically for heavy duty engine applications. Its axial seal and pliable gasket work together to create a tight seal that prevents contaminants from entering your engine. This is crucial for protecting your engine's performance and longevity. The high-efficiency cellulose media used in this filter ensures that it provides superior filtration across a wide range of heavy duty engine applications. Its pleated design delivers a higher dust holding capacity and longer filter life, meaning you can enjoy more time between filter replacements. The Pleatloc feature is another key aspect of this filter's design, as it helps to prevent media from bunching up and ensures uniform pleat spacing. This is important for promoting longer service life and ensuring that the filter continues to perform effectively over time. With a length of 262.60 mm and a round shape, this filter is easy to install and fits seamlessly into your engine's air intake system. This makes it a convenient and reliable choice for those looking to ensure optimal performance and protection for their heavy duty engine. FleetPride is your First Click in Heavy Duty®.