The McCormick 3544780M1 is a genuine OEM spring designed for a wide range of McCormick agricultural machinery. This essential component ensures proper function and durability in various McCormick X-series tractors, including models X4.20, X4.30, X4.40, X4.50, X4.60, X5.20, X5.30, X5.40, X5.50, X5.60, 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. Manufactured to McCormick's stringent quality standards, this spring provides precise fitment and long-lasting performance for critical machine operations.