Company: Forge Motorsport

Blow Off Valve and Kit for Audi, VW, SEAT, and Skoda

Product code: FMFSITAT
£245.69 Inc. VAT £204.74 Exc. VAT (VAT will be added during the checkout process) Estimate Delivery

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Check your vehicle compatibility


More info Big Gear Knob for VW and Audi - Read More

Have A Question? Read Instructions? How to Service Your Valve

Prefer to talk over the phone? Call us +44 1452 380999


Product Description

  • Direct OEM replacement
  • Made from the highest quality Aircraft quality T6061 billet aluminium construction
  • Fully compatible with OEM electronics
  • Fully serviceable piston
  • Capable to 600HP (with uprated spring kit)
  • Utilising world leading springs for more precise operation and consistency
  • All internal and external components have been made in the UK
  • Pistons use heat stabilised Viton O-rings
  • Lubricated with high temperature Mobil1 grease
  • Fully serviceable and rebuildable in minutes
  • Unlike other valves on the market, ours produce no check engine lights (EML)
  • Improved dynamic throttle response
  • Consistent turbo boost & reduced turbo lag
  • Covered by the Forge Lifetime Warranty*


This valve is designed to fit the FSI and TSI engines of the VAG group (VW, Audi, Seat, Skoda) listed below, including the 2011-2013 2.0l engine using the IHI Turbo.

  • 1.4T (with additional fitting kit FMBGFK3)
  • 1.8T
  • 2.0T

Note: This will ONLY fit the 1.4 turbo engines up to early 2013, where the turbo is mounted at the front of the engine bay. It will not fit engine codes CMBA & CXSB. We designed the slots in the body to cover a large surface area, allowing for a quick release of air, resulting in a unique sounding dumpvalve.


This upgrade/replacement for your original equipment valve integrates seamlessly with the OEM electronics. Using a wiring harness and solenoid, both tested for each specific application, you can confidentially fit a Forge part knowing that there will be no fault codes, check engine lights, or performance issues with the vehicle!

Another particularly unique feature of this product is the included intake manifold tap used to source a vacuum reference for the operation of the valve. This piece also has two other available provisions from which an intake manifold reference can be taken. These extra manifold references can be used for a boost gauge signal, and even a water/meth injection trigger where applicable.

The OEM valve uses a rubber diaphragm and a plastic housing. Both of these materials, but especially the rubber is prone to failure. The rubber can stiffen and go brittle due to the heat from the engine, resulting in diaphragm splitting and boost leak.

Our valve uses full billet alloy construction with a piston based internal design, meaning the issues with the OEM can never happen with ours! To give you even more peace of mind, we made the internals of our valve serviceable. We recommend doing this every 3 years or 20,000 miles, whichever comes first. However, if you don’t want to service your valve yourself you can order the kit and ship your valve back to us and we will carry out the service free of charge! Simply contact us to arrange the service!

The OEM valve internals can also fail if you have your vehicle mapped as the rubber diaphragm is not always strong enough to cope with the increased boost pressure. We build our valves with a spring matched to the original pressure of the car, but include in the kit a spring strong enough to cope with a stage one remap. If you decide to increase the power even more you can guarantee the reliability of our valve by using this spring tuning kit!

This valve was designed by our highly skilled engineers using CAD software to ensure that it will fit with every listed compatible vehicle with ease! 

It is particularly well suited to the B7 and B8 chassis Audi A4 and A5 with the 2.0T engine. The valve mounting location on these vehicles is positioned particularly close to the frame rail of the chassis. Compared to competitors our valve has a much shorter overall installed height.

The OEM part numbers we have replaced with our valve include:

  • 06H145710B
  • 06H145710C
  • 06H145710D
  • 06H145710F
  • 06H145710G

However, this original equipment valve is used over a multitude of vehicles. Please see our compatible vehicle list to confirm. 

⭐ Amazing product very well made. Don’t spend your money anywhere else the noise this gives off is fantastic. Can’t recommend enough ⭐

⭐ Easy to install, sounds great instructions easy to follow. Would highly recommend ⭐

⭐ Great quality product installed on a 2008 Audi TTS. Easy install, directions for install and packaging is top quality, noise is produces is 2nd to none ⭐


Check your vehicle compatibility: Click here

Please Note: In line with our policy to constantly review, revise, and improve our product range, the appearance of the product you receive may differ from the one advertised.

Product Reviews

Product Reviews

from on Jan 25th 2018
Nice replacement for our upgraded customer car.
from on Oct 2nd 2017
Amazing product very well made , don’t spend your money anywhere else the noise this gives off is fantastic , can’t recommend enough��
from on Jun 14th 2017
Easy to install, sounds great instructions easy to follow. Would highly recommend.
from on May 30th 2017
This Forge kit basically consists of a normal piston dump valve which vents to atmosphere, some vacum tubing, fitting backet, tube to block return pipe with metal bung and solinoid which is joined into the cars wiring. A spare spring for increased boost applications and instructions.

I was shocked to find that installation took about 5-10mins including removal and refitting of new valve, i did this with my standard halfords jobbie tool kit and still cant believe how straight forward it was!

Nice piece of kit - Well happy with the product - Well done Forge! :)
from on Apr 14th 2016 Verified Purchase
Great quality product installed on a 2008 audi tts, easy install, directions for install and packaging is top quality, noise is produces is 2nd to none,
from on Mar 14th 2016 Verified Purchase
Easy to install and quality product. Plenty of hose and spare clips with very fast delivery.
The sound is subtle for regular driving and nice and loud when hammering it

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Compatible Vehicles

Click the triangles to find your car make and model. Note that the models listed here have either had the part fitted by us or a customer or they are listed as being compatible on industry parts databases. Where it has not been directly fitted by Forge there will then be a separate May Also Fit tab where the make and model will also appear and which details our no-risk approach to purchasing this product, so it is worth checking there as well.

If you need further assistance, please call us on +44 1452 380999 or email us.



Blow Off Valve and Kit for Audi, VW, SEAT, and Skoda


Warranty Infomation

The majority of Forge Motorsport products come with a limited lifetime warranty (brakes pads excluded). All warranty claims must be accompanied by the original proof of purchase to enable us to help you. Failure to supply this proof will result in your claim or enquiry being denied.

For further information, please call our customer service team on +44(0)1452 380999 or email

Do not use aggressive (acidic) car cleaning products, particularly traffic film remover solutions or shampoos to clean your intercooler, radiator, or oil cooler. The use of these products can damage Forge Motorsport cooling systems and invalidate your warranty. These are often found at car washes. A light, warm, soapy solution (free of harsh acidic cleaning compounds) should be used to clean you cooler and thoroughly rinsed away. We recommend that you should inspect your product on a regular basis for bent and/or crushed fins. Any bent fins should be carefully straightened to allow ambient air to pass through the core face. At the time of installing your Forge radiator, an approved coolant must be used and added to the coolant system. Be sure you never mix coolant and always use distilled water.

This warranty does not apply to any defect in the goods arising from fair wear and tear, wilful damage, accident, negligence by you or any third party, use otherwise than as recommended by the supplier, failure to follow the supplier’s instructions, or any alteration or repair carried out without the supplier’s approval.



UK Mainland

Next day delivery applies to orders processed before 12 noon Monday to Friday, subject to stock availability and geographical restrictions. 'Next day' refers to next working day. We cannot guarantee next day delivery for orders placed after this time. Whilst we endeavour to honour our next day service, next day delivery cannot be guaranteed due to other extenuating circumstances. Full details

Delivery is free of charge for all orders £200 (ex VAT) or over. Products are sent by standard DPD service which is usually a next day service, but can take 2 days in transit. We reserve the right to ship smaller, lower value items via Royal Mail or any other service. (Not including Scottish Highlands, Scottish Isles, Northern Ireland, Guernsey, Jersey, and Isle of Man where charges will vary). 

Europe and Worldwide

Delivery service charges will vary depending on the quantity of product ordered, the related parcel size, and destination postcode. Live shipping rates will be calculated at checkout using ShippyPro and dependent on criteria, you will be given the option of DHL, DPD, or FedEx courier services.

Shipping into the EU - Duty Charge Information

All Forge products are sold with a Delivery Duty Unpaid (DDU) status and an import tariff may apply to your order. Customers will be contacted by the Customs and Excise authority in the destination country regarding payment prior to delivery, and it is important that correct contact telephone number and email information be submitted with the order to facilitate this part of the delivery process. Some couriers are charging an admin fee for shipping into the EU. 

If we detect at checkout that you are located within the European Union (EU), you are eligible for a contribution towards your import duty and tax payments. We can add an additional 20% on the total cost of your order, we will then pay the duty and tax costs above your contribution. This offer will ensure the price you pay at checkout is the total you pay, with no additional charges. It will also ensure you have the fastest possible delivery, with no delays. For more information, please see here

Our shipping methods ensure safe and timely delivery of your new Forge products. For further information on cost and delivery times, please contact Forge using the email address if you require any more information. We reserve the right to change the delivery service and company at any time.

Forge Motorsport ships via either UPS, FedEx, DHL (primarily for outside of UK), DPD (primarily for UK), or any other courier we chose. Other shipping options may be available for an additional fee over and above the actual shipping costs. Once a product has left our warehouse and is in the possession of the shipping company, any claims must be made directly with that shipper however we can assist with most cases.

FAQ's and other info can be found here.

Expert Answers

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I need advice, I have two springs in the set from you FMFSITAT, one in blue and the other in yellow, which I should use for my Auto Audi S3 8p with a power increase of 40 hp, thank you for your answer.

I would recommend the yellow spring for this aplication.

Hi I am looking for a blow off valve for my 2017 Audi A5 CAB 40 TFSI ,Engine:CVK which one is the best to get?

Yes, the part numbers FMDVMK7A (atmospheric blow off type) and FMDVMK7R (replacement recirculation type) are both compatible.

Hi I am looking for a blow off valve for my 2015 Audi S3 8V, limo/sedan which one is the best to get?

Being the 8V model the correct blow valve product code is FMDVMK7A.

Would this fit MK3 Octavia VRS 2014 2.0 tsi


The product you need for your vehicle is FMDVMK7A.

Hi, I also have a question regarding the maf sensor issue, will the engine is going to run rich every time i let off the throttle?

Hello , the engine will not run rich. 

Hi can I fit this on my Seat Leon FR mk2 2.0 TFSI 2008?

hello , yes this valve is compatible. 

Hello it this can fit to my Audi A5 b8 2.0T

hello , yes it will 

Hi I am looking for a blow off valve for my 2019 Seat Leon Cupra 290 Bhp, estate model Can you recommend one?


The product I would recommend for your vehicle would be FMDVMK7A.

Hi I have an Audi a4 B7 2.0T BUL engine code will this fit my vehicle ?

Hello , yes this will fit your vehicle.