Aftermarket value priced replacement Hot-Film Air Mass Meter, commonly referred to as the MAF sensor. This is the sensor that monitors air flow thru the intake and allows the computer to adjust fuel flow. Located just downstream from the airbox. O-ring is included with the Meter, but also available separately.

Fits the following JCW models with the N18 engine:

08/2012-2013 R56 JCW Cooper S Hardtop
08/2012-2014 R55 JCW Cooper S Clubman
08/2012-2015 R57 JCW Cooper S Convertible
08/2012-2015 R58 JCW Cooper S Coupe
08/2012-2015 R59 JCW Cooper S Roadster
2011-2016 R60 JCW Cooper S Countryman
2013-2016 R61 JCW Cooper S Paceman

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.

Select accordingly.