McCormick - 6640964A1 - Tensioner

The McCormick 6640964A1 is a genuine OEM belt tensioner designed for various McCormick X-series agricultural tractors. This critical component maintains proper tension on the engine belts, preventing slippage and ensuring efficient power transmission to accessories and engine components. It is compatible with McCormick X4, X5, X6, X7, and X8 series models, including X4.20, X4.30, X4.40, X4.50, X4.60, X5.35, X5.45, X5.55, X6.420, X6.430, X6.440, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X8.660, X8.670, and X8.680 models. Using genuine parts like the 6640964A1 ensures reliable operation and longevity for your McCormick machinery.