The John Deere R139916 is a genuine OEM extension spring designed for a wide range of John Deere agricultural and construction equipment, including numerous models across the 6000, 7000, 8000, and 9000 series. This high-quality spring provides essential tension for proper component function, ensuring durability and consistent performance. With a length of 95 mm, an outside diameter of 22 mm, and a wire diameter of 3.3 mm, it is a direct replacement part manufactured to John Deere's rigorous specifications for optimal fit and long service life.