The Massey Ferguson 4378852M96 is a genuine OEM expansion tank designed for various Massey Ferguson agricultural tractors, including models in the 5400, 6400, 7400, 7600, and 8600 series. This critical component helps manage coolant volume changes due to temperature fluctuations, ensuring optimal engine cooling system performance and preventing pressure build-up. With confirmed dimensions of approximately 330 mm length, 140 mm width, and 140 mm height, and a weight of around 0.8 kg, this expansion tank is a direct replacement part for maintaining the integrity of your tractor's cooling system.