The McCormick 392559X1 is a genuine OEM piston ring designed for optimal engine performance and sealing. This high-quality replacement part ensures proper compression and oil control in various McCormick and International Harvester tractor models, including B275, B414, 434, 444, 354, 374, 384, 276, 454, 474, 475, 574, 674, 784, 884, 2400, 2500, 3434, 3500, 3600, and 3800. Manufactured to original specifications, it provides reliable fitment and durability for engine rebuilds and maintenance.