Function: Plays the role of balancing the tank pressure, and there is a corresponding scale, indicating the level of the liquid, and intuitively knowing whether the water volume is sufficient. Premium Material: The radiator expansion tank is made of high strength ABS plastic material, which is high temperature resistant, wear proof and durable. Easy to Install: Stringently manufactured to meet the standard, good replacement for the old or broken one, improving the time efficiency. Item Type:Engine Coolant Expansion Tank Part Number:21721 JD00B, 21721 JD00B Fitment:For Colour:White & Black Material:Plastic Package Contents: 1 * Water Tank Radiator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.