This genuine McCormick part number 6613924A1 is a high-quality fitting designed for various McCormick X-series agricultural tractors. It ensures proper hydraulic or fluid connections within the machinery, maintaining system integrity and performance. Confirmed fitment for models including X4.20, X4.30, X4.40, X4.50, X4.60, X5.20, X5.30, X5.40, X5.50, X6.440, X6.460, X6.470, X6.480, X6.490, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X7.690, X8.660, X8.670, X8.680, and X8.690.