Fits the following non-JCW models with the N12/N14 engines:
2007-2010 R56 Cooper and Cooper S Hardtop
2008-2010 R55 Cooper and Cooper S Clubman
2009-2010 R57 Cooper and Cooper S Convertible
Note: The part number varies depending on the engine type (N12, N14, N16, N18) and also different for the JCW models. The O-ring is the same for all models.