The McCormick 3791227M2 is a genuine OEM washer designed for use in a wide range of agricultural and industrial machinery. This durable washer ensures proper spacing and load distribution, preventing wear and tear on critical components. It has an inner diameter of 18.5 mm, an outer diameter of 30 mm, and a thickness of 3 mm. It replaces the part number 3791227M1 and is compatible with numerous Massey Ferguson, Fendt, Valtra, Challenger, and McCormick models.