BMW Genuine Cooling Water Coolant Radiator Expansion Tank Cap (2.0 Bar) 318i 318is 318ti 320i 323i 325i 325is 328i M3 M3 3.2 740i 740iL 740iLP 750iL 750iLP 525i 528i 530i 540i 540iP M5 320i 323Ci 323i 325Ci 325i 325xi 328Ci 328i 330Ci 330i 330xi M3 X5 3.0i X5 4.4i X5 4.6is X5 4.8is 745i 750i 760i ALPINA B7 745Li 750Li 760Li X BMW Genuine Cooling Water Coolant Radiator Expansion Tank Cap (2.0 Bar) This part is used in Cooling water expansion tank -- EXPANSION TANK -- expansion tank / mounting plate -- Expansion tank, automatic transmission -- Expansion tank, intercooler -- Expansion tank, manual transmission -- Expansion tank/coolant hoses -- EXPANSION TANK/TUBI Manufacturer Warranty: 24000 miles or 2 years Please see Product Description below for vehicle compatibility