The McCormick 6678337A1 Pulley is a genuine OEM component designed for various McCormick X-series tractors. This essential part ensures proper operation within the machinery's system. With precise dimensions of 76 mm length, 76 mm width, and 25 mm height, and a weight of approximately 0.09 kg, it offers reliable performance and a perfect fit for models including X4.20, X4.30, X4.40, X4.50, X4.60, X5.20, X5.30, X5.40, X5.50, X6.420, X6.430, X6.440, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X8.660, X8.670, X8.680, and X8.690.