The Welger 094052980000 is a genuine OEM yarn tension spring designed for use in a wide range of Welger square and round balers. This critical component ensures proper tension on the baler's knotter system, contributing to reliable and consistent bale formation. With a length of 95 mm, an outer diameter of 51 mm, and a wire diameter of 5 mm, this spring maintains the necessary pressure for efficient operation. It is an essential replacement part to restore or maintain the performance of your Welger baling equipment.