1、OE Number: The referencing OE number of this expansion tank cap are 5193938, DG938101AA, which is molded and designed depend on the original data, and maintaining the original car model. 2、Fitment: The coolant expansion water tank cap is a replacement for B‑Max C‑Max Ecosport Fiesta Focus Fusion Galaxy, for Range Rover Discovery Freelander, for C30 C70 S60. 3、Durable Material: The expansion tank cap is made from heavy duty plastic that is highly resistant to extreme temperature fluctuations, ensures it maintains its integrity and performance over time. 4、Secure Fit: The expansion tank cap is designed to fit securely on your radiator coolant tank, preventing any coolant leakage and ensuring your engine maintains optimal operating temperature. 5、Safety Ensured: By keeping the radiator coolant securely enclosed within the tank, the expansion tank cap helps prevent overheating, ensuring the safety and longevity of your vehicle's engine.