The McCormick 6638155A1 Strap is an original equipment manufacturer (OEM) part designed for various McCormick X-series tractors. This genuine strap ensures proper fit and function, maintaining the integrity of your agricultural machinery. Compatible with models including X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.35M, X4.40M, X4.50M, X4.55M, X4.60M, X4.70M, X5.20, X5.30, X5.40, X5.50, X5.60, X5.70, X6.420, X6.430, X6.440, X6.460, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X8.660, X8.670, and X8.680.