This is a genuine OEM McCormick 3665599M91 piping, also referred to as a rigid pipe. It is an essential component designed for various McCormick X4 series tractors, including models X4.30, X4.40, X4.50, X4.60, X4.70, X4.35, X4.45, X4.55, X4.65, X4.75, X4.060, X4.070, X4.080, X4.090, X4.100, X4.110, and X4.120. This OEM part also ensures compatibility with Landini 4-060, 4-070, 4-080, 4-090, 4-100, 4-110, and 4-120 tractors, providing reliable performance and a precise fit.