The 47665418 is a genuine OEM exhaust fluid (AdBlue) tank designed for Case IH Farmall A series tractors, including models 75A, 85A, 95A, 100A, 110A, 120A, and 140A. This essential component is also compatible with New Holland T4 series tractors such as T4.75, T4.85, T4.95, T4.100, T4.110, and T4.120. It plays a crucial role in the selective catalytic reduction (SCR) system, helping to reduce harmful emissions and maintain engine efficiency.