The McCormick 328546A1 pinion is a genuine OEM replacement part designed for various McCormick, Case IH, and New Holland agricultural tractors. This essential gear component features 16 teeth, a diameter of 47.5 mm, and an overall length of 104 mm, ensuring precise fit and reliable power transmission within the drivetrain. It is compatible with McCormick MTX series, Case IH MXM series, and New Holland TM series tractors, providing optimal performance and durability.