The McCormick 3688016M1 is a genuine OEM piston ring designed for various agricultural machinery models, including McCormick, Massey Ferguson, and Landini tractors. This high-quality piston ring ensures optimal engine compression and performance. With a confirmed diameter of 98.43 mm and a thickness of 3.17 mm, it is a critical component for engine maintenance and repair, contributing to the longevity and efficiency of the engine.