This genuine McCormick 6630577A1 pipe is an original replacement part, compatible with a range of McCormick X4 series tractors including models X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.80, X4.90, X4.100, X4.110, and X4.120. It also fits Landini 4 series tractors, specifically models 4-060, 4-070, 4-080, 4-090, 4-100, 4-110, and 4-120. This pipe ensures proper fitment and performance for critical systems within these agricultural machines.