The Case IH 85820809 is a genuine OEM oil seal, precisely engineered to prevent oil leakage and protect critical components in various Case IH, New Holland, and Steyr agricultural and construction machinery. With confirmed dimensions of 40mm inner diameter, 55mm outer diameter, and 8mm width, this high-quality seal ensures a secure fit and long-lasting durability. It is a direct replacement for part number 87304164, maintaining optimal lubrication and operational efficiency.