Mini 'S' (1st Gen) Coolant Overflow Tank w/ Cap BEHR Coolant Expansion Tank with Cap BMW Mini part# 17 13 7 529 273, for Cooper S only. Recently made by BEHR HELLA SERVICE, not been lying around. Fits: r53: (2002-2006): Cooper: S Hatch Fits: r52: (2005-2008): Cooper: S Conv