The Cat 1R1809 Advanced Efficiency Engine Oil Filter is a genuine Caterpillar part designed to provide superior filtration and protection for Cat engines. This spin-on oil filter features advanced media for extended service intervals, ensuring optimal engine performance and longevity by effectively removing contaminants. With an outer diameter of 108 mm and a height of 260 mm, it is engineered for a precise fit and reliable operation in a wide range of Cat articulated trucks, excavators, wheel loaders, and track-type tractors.