The McCormick 3657123M91 is a genuine OEM water hose designed for various McCormick MC and MTX series tractors. This essential component ensures efficient coolant circulation, maintaining optimal engine operating temperatures and preventing overheating. Manufactured to McCormick's stringent quality standards, it provides reliable performance and a precise fit for models including MC100, MC105, MC115, MC120, MC135, MC80, MC90, MTX110, MTX120, MTX135, MTX150, MTX165, MTX175, MTX185, and MTX200. With a length of 330 mm and a diameter of 40 mm, this hose is crucial for the cooling system's integrity.