This genuine McCormick 6633751A1 shim is an essential OEM component designed for precise fitment in various McCormick and Landini agricultural tractors. It ensures correct spacing and alignment within critical machinery assemblies, contributing to optimal performance and longevity. Compatible with McCormick X4.20, X4.30, X4.40, X4.50, X4.60, X5.35, X5.45, X5.55, X6.420, X6.430, X6.440, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X8.660, X8.670, X8.680 series, and Landini 4-060, 4-070, 4-080, 4-090, 5-085, 5-095, 5-105, 6-125, 6-135, 6-145, 7-160, 7-170, 7-180, 7-200, 7-210, 7-230, 8-270, 8-290, 8-310 series tractors.