The 87801689 is a genuine OEM belt tensioner designed for a wide range of New Holland and Ford agricultural tractors. This critical engine component maintains proper tension on the drive belts, preventing slippage and ensuring efficient operation of accessories. It is also cross-referenced as a Case IH equivalent part. With a weight of 0.399 kg and dimensions of 146.05 mm length, 82.55 mm width, and 82.55 mm height, this tensioner is built to OEM specifications for reliable performance and durability.