The Donaldson P552603 is a genuine spin-on fuel filter designed for high-performance fuel filtration in agricultural and construction machinery. This filter features a 10-micron efficiency rating, ensuring optimal protection against contaminants for critical engine components. With an outer diameter of 77mm, a length of 104mm, and an M16x1.5 thread, it provides a reliable fit. It is commonly cross-referenced with OEM part numbers such as Caterpillar 1R0749 and John Deere RE509031, fitting a wide range of Caterpillar backhoe loaders, compact track loaders, excavators, and John Deere tractors, combines, sprayers, harvesters, and loaders.