The Ford/New Holland 89512618 transmission switch is a genuine OEM component designed for precise control within the transmission system of compatible Ford and New Holland agricultural tractors. This essential switch ensures reliable operation and proper function across a wide range of models, including Ford 4630, 5030, 5610S, 6610S, 7610S, 8010, 8160, 8260, 8360, 8560, and New Holland TM and TS series tractors. It is engineered to meet original equipment specifications for durability and performance.