The Case-IH 51200224 is a genuine OEM washer designed for critical applications in Case-IH and New Holland agricultural and construction equipment. With an inner diameter of 20.5 mm, an outer diameter of 30 mm, and a thickness of 2 mm, this washer provides essential spacing and load distribution, preventing loosening and wear. It is a direct replacement part for various models, including Maxxum, Puma, Farmall, T6, and T7 series, ensuring optimal performance and longevity.