The McCormick 6606439A3 Extension is a genuine OEM component designed for various McCormick X-series tractors. This extension ensures proper functionality and compatibility with models including X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.80, X4.90, X5.20, X5.30, X5.40, X5.50, X5.60, X5.70, X5.80, X5.90, X6.420, X6.430, X6.440, X6.450, X6.460, X6.470, X6.480, X6.490, X7.440, X7.450, X7.460, X7.470, X7.480, X7.490, X7.650, X7.660, X7.670, X7.680, X7.690, X8.660, X8.670, X8.680, X8.690. With a length of 95 mm, width of 51 mm, height of 25 mm, and weighing 0.05 kg, this extension is manufactured to McCormick's stringent quality standards for durability and optimal integration.