The Donaldson Primary Radial Seal Air Filter is a top-of-the-line air filter designed to provide superior performance and protection for heavy duty engines. With a radial seal design and a length of 381.50 mm, this filter is perfectly shaped to fit your Caterpillar engine and provide maximum filtration efficiency. Made from high-quality cellulose filter media, this air filter is designed to perform across a wide range of heavy duty engine applications. The cellulose media is highly efficient and provides superior filtration, ensuring that your engine is protected from harmful contaminants and debris. In addition to its superior filtration capabilities, the air filter is also highly corrosion resistant. This means that it can withstand harsh environments and extreme temperatures, ensuring that it will last . The filter also features a unique Pleatloc feature, which ensures uniform pleat spacing and helps to maintain the filter's structural integrity. This feature helps to prevent pleat bunching and ensures that the filter maintains its shape and performance over time. Overall, the air filter is a top-quality air filter that is designed to provide superior performance and protection for your heavy duty engine. Whether you're looking to improve your engine's performance or simply want to ensure that it is protected from harmful contaminants, this air filter is the perfect choice. FleetPride is your First Click in Heavy Duty®.