Look here: http://www.realoem.com/bmw/showparts...63&hg=64&fg=15 It would seem like you need part number 1, which is supposed to be replaced along with the tubes, o-ring, and a radiator cap. __________________ Philadelphia Region SCCA Autocross/Rallycross 97 M3ti 11 Jetta Sportwagen TDI 94 Mazda Miata R |