The McCormick 302910A2 is an authentic OEM piston ring designed for a wide range of McCormick agricultural tractors. This critical engine component ensures optimal compression and effective oil control within the cylinder. It provides a precise fit and reliable performance for engine maintenance and repair across various models, including the CX, MC, MTX, T, and V series. With a bore diameter of 100 mm and a height of 3 mm, it is engineered to meet original equipment specifications.