This genuine McCormick 3664674M2 crankshaft pulley is an essential component for the engine's operation, ensuring proper power transmission. It is designed for a wide range of agricultural machinery, including various Massey Ferguson, Landini, and McCormick tractor models. The pulley features an outer diameter of 180 mm, an inner diameter of 45 mm, and a height of 60 mm, with a weight of 2.5 kg. This high-quality OEM part is crucial for maintaining engine performance and is cross-referenced with other original equipment numbers.