The McCormick 1440579X1 is a genuine OEM ball bearing, precisely engineered with an inner diameter of 45mm, an outer diameter of 85mm, and a width of 19mm. This durable bearing weighs 0.44 kg and is widely used across various agricultural machinery, including numerous models from McCormick, Massey Ferguson, Fendt, Valtra, Case IH, and other brands. It serves as a direct replacement for multiple OEM part numbers, ensuring reliable performance and compatibility for critical applications in tractors and other farm equipment.