Fits the following Cooper S models with the N14 engine:

2007-2010 R56 Cooper S Hardtop
2008-2010 R55 Cooper S Clubman
2009-2010 R57 Cooper S Convertible

And the following JCW models with the N14 engine:

2007-2012 R56 JCW Cooper S Hatchback
2008-2012 R55 JCW Cooper S Clubman
2007-2012 R57 JCW Cooper S Convertible

This Blow Off valve is for the Peugeot / BMW Mini N14 1.6 Turbo engines, as found in the Peugeot 207/307/308 GT Turbo and BMW Mini Cooper S Turbo fitted with the N14 engines, these are in the Cooper S from 2007 - 2010 and the JCW Cooper S 2007-2012. This valve is recommended for any vehicle where the boost pressure has been increased by an ECU software upgrade and for unmodified vehicles operating in warmer climates, as a solution to the many failures that have occurred.

The most common complaint on the OEM solenoid valve is a split diaphragm preventing the valve from opening fully, or not at all. This doesn’t always result in a check engine light as the valve can still be blown open by the boost pressure. We have seen many valves with this problem .The other problem is that diaphragm retaining ring is made from very thin plastic that goes brittle with heat cycles, and eventually fails. This prevents the diaphragm from sealing with the same problems as mentioned above. This particular failure also results in the valve falling apart upon removal from the turbo, though in extreme cases bits of plastic can enter the turbo and destroy it.

Our alternative is a fully engineered solution offering both significantly improved reliability .Our valve is piston based , with no diaphragm to fail, and of all aluminium construction, it replaces the original unit with a pressure/vacuum operated piston valve that still also retains the desirable OEM ECU control over valve actuation. The valve has been proved on the VAG scene for many years. The spring is interchangeable for different levels of boost, and the solenoid is plug and play with the wiring harness which is included.

NOTE: Some states (like California) have ever tightening requirements for emissions testing and inspections. Always check your current state regulations on compliance for street use before you order.

Browse more MINI Cooper Blow Off Diverter Valves

Blow Off Valve Kit recommeded for the MINI Cooper S with increased boost, or simply for those wanting a loud Blow off sound or simply as a solution to the many failures that have occurred. For the Cooper S with the N18 Turbocharged engines, these are Cooper S 2011 onwards and JCW Cooper S 2013 onwards.

Fits the following Cooper S models with the N18 Engine:

2011-2013 R56 Mini Cooper S Hatchback
2011-2014 R55 Mini Cooper S Clubman
2011-2015 R57 Mini Cooper S Convertible
2012-2015 R58 Mini Cooper S Coupe
2012-2015 R59 Mini Cooper S Roadster
2011-2016 R60 Mini Cooper S Countryman
2013-2016 R61 Mini Cooper S Paceman

And the following JCW models with the N18 engine:

2013 R56 JCW Cooper S Hatchback
2013-2014 R55 JCW Cooper S Clubman
2013-2015 R57 JCW Cooper S Convertible
2013-2015 R58 JCW Cooper S Roadster
2013-2015 R59 JCW Cooper S Coupe
2013-2016 R60 JCW Cooper S Countryman
2013-2016 R61 JCW Cooper S Paceman

This Blow Off valve is for the Peugeot / BMW Mini 1.6 Turbo engines, as found in the Peugeot 207/307/308 GT Turbo and BMW Mini Cooper S Turbo fitted with the N18 engines, these are in the Cooper S from 2011+ and the JCW Cooper S 2013+. This valve is recommended for any vehicle where the boost pressure has been increased by an ECU software upgrade and for unmodified vehicles operating in warmer climates, as a solution to the many failures that have occurred.

The most common complaint on the OEM solenoid valve is a split diaphragm preventing the valve from opening fully, or not at all. This doesn’t always result in a check engine light as the valve can still be blown open by the boost pressure. We have seen many valves with this problem .The other problem is that diaphragm retaining ring is made from very thin plastic that goes brittle with heat cycles, and eventually fails. This prevents the diaphragm from sealing with the same problems as mentioned above. This particular failure also results in the valve falling apart upon removal from the turbo, though in extreme cases bits of plastic can enter the turbo and destroy it.

Our alternative is a fully engineered solution offering both significantly improved reliability .Our valve is piston based , with no diaphragm to fail, and of all aluminium construction, it replaces the original unit with a pressure/vacuum operated piston valve that still also retains the desirable OEM ECU control over valve actuation. The valve has been proved on the VAG scene for many years. The spring is interchangeable for different levels of boost, and the solenoid is plug and play with the wiring harness which is included.

NOTE: Some states (like California) have ever tightening requirements for emissions testing and inspections. Always check your current state regulations on compliance for street use before you order.