1、Applicable Model: The expansion tank is replacement for Jaguar XF XJ. Please confirm whether it is consistent with the product you want before buying to avoid unnecessary return. 2、OE Number: The part numbers for reference are C2Z11668, C2D36878, C2Z4255, C2C39459, C2P17700, 4R838A080AB, 4R838A080AC, 4R838A080AD, 4R838A080AE, XR850837, JDE34572. 3、Premium Material: Made of premium materials, the coolant expansion tank has excellent resistance to high temperatures and pressures, ensuring safe engine operation in extreme conditions. 4、Fast Heat Dissipation: The radiator coolant expansion tank quickly dissipates heat inside the radiator, maintaining the engine within normal operating temperature range, enhancing engine cooling efficiency, and improving engine performance and lifespan. 5、Easy to Install: The radiator coolant reservoir tank has a simple installation, convenient and time saving, don't need too much tools or complicated steps.