The McCormick 3657377M91 Valve is a genuine OEM component designed for various McCormick X-Series tractors. This essential valve ensures optimal hydraulic system functionality, providing reliable control and efficient operation. Manufactured by Argo Tractors, it meets stringent quality standards for durability and performance. Compatible with McCormick 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, and X7.680 models.