The Case-IH 86639051 is a genuine O-Ring Face Seal (ORFS) hydraulic fitting, designed for reliable, leak-free connections in high-pressure hydraulic systems. This fitting features a 1-7/16 inch connection size and is a critical component for maintaining hydraulic integrity across a wide range of Case IH and New Holland agricultural and construction equipment. Manufactured to OEM specifications, it ensures optimal performance and durability.