The McCormick T219537061BB Duct is a genuine OEM component designed for various McCormick X4 series tractors, including models X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.35, X4.45, X4.55, X4.65, and X4.75. This duct also ensures proper fitment and function in compatible Landini 4-series tractors (4-060, 4-070, 4-080, 4-090, 4-100, 4-110, 4-120, 4-075, 4-085, 4-095, 4-105, 4-115) and Valpadana 9000 series tractors (9000-100, 9000-110, 9000-120), maintaining optimal system performance.