The McCormick 3681965M91 spring is a genuine OEM replacement part designed for a wide range of McCormick agricultural tractors, including CX, MC, MTX, X6, X7, and XTX series models. This durable spring measures 95 mm in length with an outer diameter of 51 mm and a wire diameter of 5.5 mm, weighing 0.12 kg. It ensures proper function and fitment, maintaining the original equipment specifications for optimal machine performance. Replaces old reference 3681965M1.