The Case IH 440729A is a genuine OEM radiator cap designed for various Case IH MXM and MXU series agricultural tractors. This essential component maintains the correct pressure within the cooling system, preventing coolant loss and ensuring efficient engine temperature regulation. With a pressure rating of 1.1 bar, an outer diameter of 58 mm, an inner diameter of 30 mm, and a height of 30 mm, this cap provides a secure and reliable seal for the expansion tank.