Reduce cavitation Turn the cooling system into a permanent closed system to reduce the loss of coolant. Avoid continuous air ingress and avoid oxidative corrosion of the parts. The water and in the cooling system are separated, the pressure in the system is stable, and the pumping amount of the water pump is increased. Specifications: Type: Coolant Reservoir Part Number: C2Z13764 XR852096 Application: 2002-2008 For S-Type 2004-2009 For 2009-2010 For XF 2004-2009 For XJ8 color:white Material:ABS Package Contents: 1x Coolant Reservoir 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.