The McCormick 6719678A1 is a genuine OEM spring designed for various McCormick and Landini tractor models. This essential component ensures proper tension and function within the specified machinery systems. It is compatible with McCormick X4.20, X4.30, X4.40, X4.50, X4.60, X5.35, X5.45, X5.55, X5.085, X5.095, X5.105, X5.115, X6.420, X6.430, X6.440 series, and Landini 4-060, 4-070, 4-080, 4-090, 4-100, 5-085, 5-095, 5-105, 5-115, 6-120C, 6-130C, 6-140C models. This spring is a direct replacement for Landini part number 36719678A1.