The Donaldson P775688 is a high-quality primary air filter designed to provide excellent protection for heavy-duty engines. This genuine Donaldson filter effectively captures contaminants, preventing them from entering the engine and ensuring optimal performance and longevity. With a length of 330.2 mm and an outer diameter of 152.4 mm, it is engineered for reliable air intake filtration in various applications. It cross-references with several OEM part numbers, including Caterpillar 110-6331, John Deere AT175377, and Volvo 11708551.