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Forge BMW N55 Blow Off Valve Kit M2, M135i, M235i, 335i & 435i with Electronic Wastegate


  • £180.53
    exc. VAT £150.44

In Stock


This blow off valve, or dump valve is for the BMW M235i 3.0 Petrol Turbo engine with the Electronic Wastegate, as found in the F22 chassis model that has a single electronically controlled bypass valve. This product is recommended for both unmodified vehicles and any vehicle where the boost pressure has been increased by an ECU software upgrade, as a replacement to the OEM bypass valve. Unfortunately the standard valve fails when the plastic deteriorates with age normally resulting in a check engine light. Unfortunately the valve may still partially function, so you may not be aware that you are losing power due to this. This particular failure can also result in the valve falling apart upon removal from the turbo, and in extreme cases, bits of plastic entering the turbo, resulting in serious damage.

Our alternative is a fully engineered solution offering significantly improved reliability. Our valve is piston based, with no diaphragm to fail, and with a body of all aluminium construction. It’s also fully serviceable and the spring strength can be changed to suit increased boost levels. Most importantly it still also retains the desirable OEM ECU control over valve actuation, with the inclusion of an electrical harness that plugs straight into the BMW wiring. It’s literally plug and play.




Please note, BMW F87 M2 2015-2018 (Non-Competition Model) will require additional loom for installation.


Compatibility Check

To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number(UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout.



BMW F20/F21 M135i July 2013+ (Electronic Wastegate)

BMW F22/F23 M235i July 2013+ (Electronic Wastegate)

BMW F30/F31/F34 335i July 2013+ (Electronic Wastegate)

BMW F32/F33/F36 435i July 2013+ (Electronic Wastegate)

BMW F87 M2 2014+ (Electronic Wastegate)


Modification required on the F87 M2


Free Next Day UK Delivery

Free next day delivery on stock items if ordered before 11am! We can also ship worldwide, simply contact us for a quote.



Forge Limited Lifetime Warranty (Non-Transferable)


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