The McCormick 6514306M1 is a genuine OEM piston ring designed for a wide range of McCormick agricultural tractors. This essential engine component helps maintain proper cylinder compression and oil control, crucial for efficient engine operation and longevity. It is a direct replacement for original parts, ensuring perfect fit and reliable performance in models such as the CX, MC, MTX, and various X-series tractors. This part is cross-referenced with Massey Ferguson 3639148M1 and Perkins 4181A028.