The McCormick 3658044M1 is a genuine primary air filter designed to provide superior engine protection for McCormick X4, X5, X6, X7, and X8 series tractors. This essential component effectively removes dust, dirt, and debris from the air intake, preventing premature engine wear and maintaining performance. With an outer diameter of 170 mm, an inner diameter of 90 mm, and a height of 300 mm, this filter ensures a precise fit and reliable filtration for various McCormick models including the 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.