The John Deere DQ35757 is an authentic OEM belt tensioner designed to ensure optimal tension on drive belts across a wide range of John Deere agricultural and construction equipment. This crucial component prevents belt slippage, minimizes wear on associated pulleys, and guarantees efficient power transmission. Engineered to John Deere's stringent quality standards, it provides reliable and durable performance for models including 6R, 7R, 8R, 9R series tractors, S-series combines, and X9 combines. With a weight of 0.798 kg and dimensions of 150 mm length, 110 mm width, and 80 mm height, this tensioner is built for precise fit and long-lasting operation.