The McCormick A77401 Ring is an authentic OEM engine component, crucial for maintaining optimal engine performance in a wide array of agricultural and construction machinery. This high-quality ring is designed for precise fitment and durability. It is a direct replacement for the original part and ensures reliable operation across numerous models from brands such as McCormick, Case IH, Valmet, Massey Ferguson, Fendt, and Challenger. This part is also cross-referenced with Massey Ferguson OEM numbers 3381023M1 and 3381023M2.