This genuine Kuhn 537423401 tension spring is an essential component for maintaining optimal performance in compatible Kuhn HR 3004, HR 4004, and HR 6004 power harrows. Featuring a robust design with a length of 120 mm, an outer diameter of 25 mm, and a wire diameter of 4 mm, this spring ensures reliable tension and durability. It is designed to provide precise fitment and restore the original functionality of your Kuhn agricultural machinery.