Description Reviews We see a lot of leaky gen 2 thermostats here at the shop. We are almost installing one a week it seems. Keep an eye on your coolant tank when you are checking your oil. If it's low, then you need to look down the driver's side of the motor (right next to valve cover) to see if coolant is pooling around the top brown sensor. You can also get a SES light when the sensor gets the wrong readings as well as a hard start. This part will actually stop the car from starting in certain conditions because the sensor is giving the car the wrong info (extreme temps). This is an electric operated thermostat assembly, so your car's ECU controls how it opens and closes. This thermostat is a brand new MINI OEM part with a 2 year unlimited miles warranty from MINI. This is the latest and greatest design and will fit all Cooper or Cooper S's with the N12 or N14 motors as well as the N14 JCW motors (Build Dates 06/10-03/12). As well as for N16 MC (Build Dates 03/12-02/13) For all R55 Clubmans R56 Hardtops, R57 Convertibles, R58 JCW Coups & Coopers, R59 JCW Roadsters & Coopers, R60 Cooper Countryman, R61 Cooper Paceman. Don't forget some quality fluid!