The McCormick 3672540M1 Piston Ring is a genuine OEM component designed for various McCormick tractor models, including the C, CX, MC, MTX, XTX, and ZTX series. This essential engine part ensures proper compression and oil control within the cylinder. It features a 100mm diameter and 3mm thickness, crafted to precise specifications for optimal engine performance and longevity. This piston ring is also cross-referenced for use in select Massey Ferguson, Valtra, Fendt, and Challenger agricultural machinery.