This genuine McCormick 6616157A1 Pulley is an essential component for various McCormick X-series tractors, including X4.20, X4.30, X4.40, X4.50, X4.60, X5.20, X5.30, X5.40, X5.50, X5.60, 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 models. It also fits a wide range of Landini tractors such as 4-060, 4-070, 4-080, 4-090, 4-100, 5-085, 5-090, 5-100, 5-110, 5-120, 6-120C, 6-130C, 6-140C, 7-140, 7-160, 7-180, 7-200, 7-210, 7-230, 7-240, 8-260, 8-270, 8-280. Ensure optimal performance and compatibility with this authentic replacement part.