The McCormick 3665408M1 is a genuine OEM shim designed for critical spacing and alignment within McCormick agricultural equipment. This high-quality shim ensures proper component clearance and reduces wear, contributing to the longevity and optimal performance of your machinery. With an outer diameter of 40.0 mm, an inner diameter of 25.0 mm, and a thickness of 1.0 mm, it is engineered to meet exact specifications for a wide range of McCormick tractor models, including CX, MC, MTX, X60, X70, and XTX series.