The Landini 31745121 is a genuine OEM compression spring designed for a wide range of Landini tractors, including models from the 4, 5, 6, 7, 8, 9, REX 3, and REX 4 series. This high-quality spring ensures proper function and durability within the specified applications. With a length of 95 mm, an outer diameter of 12 mm, and a wire diameter of 2 mm, it is engineered to meet original equipment specifications for optimal fit and performance.