The McCormick 6529984M1 is a genuine OEM piston ring, crucial for maintaining optimal engine compression and oil control in agricultural and industrial machinery. This standard size piston ring, with a bore diameter of 91.44 mm and a thickness of 2.38 mm, is compatible with a wide range of Massey Ferguson and Landini tractor models, as well as Perkins A4.212, A4.236, A4.248, and A6.354 engines. Weighing approximately 0.01 kg, it ensures reliable and efficient engine operation.