The John Deere ER339036 is a genuine OEM side tensioner designed for optimal performance in various John Deere agricultural machinery. This tensioner ensures proper belt or chain tension, contributing to the efficient operation and longevity of the equipment. It is compatible with S-Series Combines, CP690 Cotton Pickers, 8000 and 9000 Series Forage Harvesters, and W-Series Windrowers. Measuring 95 mm in length, 51 mm in width, and 51 mm in height, with a weight of 0.12 kg, this component is engineered to meet John Deere's rigorous quality standards.