The Case IH FF4052A is a genuine spin-on fuel filter designed to provide superior filtration for various Case IH and New Holland agricultural tractors. It features a 10-micron efficiency rating (99%) and a 25-micron efficiency rating (99.9%) to protect the fuel system from contaminants. With an M16 x 1.5 thread size, an outer diameter of 76.96 mm, and a length of 131.06 mm, this filter ensures a secure fit and optimal performance, replacing OEM part number 87399887.