The Case-IH 87399981 is a genuine OEM drive belt, specifically a V-belt, designed for reliable power transmission in various Case-IH agricultural machinery. This essential component measures approximately 2654 mm in length and 22 mm in width, with a weight of 0.567 kg. It is engineered to meet the exact specifications of Case-IH tractors, including models in the Puma, Maxxum, Optum, and Vestrum series, ensuring precise fitment and durable performance for critical engine and accessory drives.