The McCormick 6638026A1 is a genuine OEM friction plate designed for specific McCormick X4 and X5 series agricultural tractors. This essential component ensures efficient and smooth power transmission within the machinery's system. With a diameter of 180 mm and a thickness of 5 mm, this durable plate weighs approximately 0.22 kg, providing precise fit and optimal performance for models including X4.20, X4.30, X4.40, X4.50, X4.60, X5.20, X5.30, X5.40, and X5.50.