The McCormick 6518008M1 is a genuine OEM piston ring designed for specific McCormick agricultural machinery. This critical engine component features an outer diameter of 105 mm, an inner diameter of 95 mm, and a thickness of 3 mm, weighing approximately 0.02 kg. It ensures proper compression and sealing within the engine cylinder, contributing to efficient engine operation and longevity across a range of McCormick CX, CMAX, MC, MTX, X60, and XTX series tractors.