2002 Mini Cooper Submodel: S; Engine: 1.6L L4; Location: Expansion Tank; With OE No. PCD100160;. 2003 Mini Cooper Submodel: S; Engine: 1.6L L4; Location: Expansion Tank; With OE No. 2004 Mini Cooper Submodel: S; Engine: 1.6L L4; Location: Expansion Tank; With OE No.