This Dorman 603361 coolant overflow reservoir is a perfect fit for BMW X5 X6 E70. It comes with a cap and is made of high-quality plastic material. The mounting style is bolt-on and it has a length of 228.2mm and a height of 305mm. This OE solutions coolant tank is 100% leak tested and is compatible with a universal fitment. It is a great replacement part for your engine cooling components. The manufacturer part number is 603-361 and it has interchange part numbers of EPT0017, FRT1905C, and EPK0017. The OE/OEM part numbers are 17137552546, 17138621092, 17137647290, and 17138630170. This coolant tank is made in Taiwan and is not a vintage part. It is not a performance part and is compatible with no universal fitment.