The McCormick 6613761A1 Piston Ring is a genuine OEM component designed for various McCormick tractor models, including the CX, MC, MTX, XTX, and ZTX series. This essential engine part, with a diameter of 104.00 mm and a height of 3.00 mm, is crucial for maintaining proper compression and oil control within the engine. Weighing 0.03 kg, it is built to McCormick's high standards for durability and performance, ensuring reliable operation for compatible Perkins engines like the 1104D-E44TA and 1104C-E44TA.