Company: Forge Motorsport

Forge Motorsport Valve Service Kit

Product code: FMDVSK
£17.54 Inc. VAT £14.62 Exc. VAT (VAT will be added during the checkout process) Estimate Delivery
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Have A Question? Read Instructions?

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


Product Description

For info on how to service your valve, click on the 'Instructions' tab above or visit our guides here

To order the correct part, you will need to the know the Forge product code of your valve. This will start with 'FM' and will be located on your original purchase receipt, or on the side of the product box. By servicing your valve/adaptor at regular intervals, you can ensure that your Forge Motorsport product will last a lifetime.

Each service kit varies depending on which product you need it for:

  • Valve service kits ONLY contain replacement "O" rings, piston, and grease. 
  • Blow off adaptor service kits contain ONLY replacement "O" rings and bolts. 
  • The splitter valve service kit contains a replacement brass piston and spring.
  • Valves that have O-rings situated on the piston will not come with a piston as the wear is on the O-rings rather than the piston itself.

If you would like to know what is included in your specific valve service kit, please contact us. If you do not see your product listed, please contact us with your requirements.


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 Sep 13th 2023 Verified Purchase
Great product to prolong the life of your dv without having to buy a new one
from on Oct 13th 2020 Verified Purchase
Ordered mine with a spring for the 008p came next day i quickly called before ordering to check it was the right one and it was confirmed what i needed, very easy to service using the kit and spring with a video to help top class again from forge motorsport
from on Aug 11th 2020 Verified Purchase
10/10 5 star, simply amazing. Does what its supposed to. No suprises at all!
from on May 19th 2020 Verified Purchase
Great quality service kit for my valve, fast delivery. 5* from Forge from on Apr 27th 2020 Verified Purchase
Great service from a great company. from on Mar 9th 2020 Verified Purchase
Brilliant service and even better quality. Will use again
from on Apr 3rd 2019 Verified Purchase
Excellent item, fits also the old 007 DV.
from on Jan 14th 2019 Verified Purchase
Great quality!!! All perfect and great comunication!!! Top
from on Oct 21st 2018 Verified Purchase
Fast delivery, very good notifications, quality product as always! First time ordered with forge directly from their website and was so shocked at how fast delivery was and how well they kept me informed on my order.
from on Jul 24th 2018
I needed a new spring for my v splitter.
Wasn’t to sure what valve code I needed so I emailed in and that got back to me quickly and sent the link and the code. Delivered one day later so top marks.
from on Jun 28th 2018
Well designed using great materials. Fits perfectly and works great. Better boost hold and smoother dump sound. Can notice the increase in performance.
from on May 24th 2018
Ordered and arrived next day!! Fitted into my 007p within 10 mins :) Very happy!
from on Feb 22nd 2018
Ordered a service kit for my forge 50/50 dump valve FMDVK04SA for focus st225 mk2 , come with pouch of grease , new small bottom spring , and all rubber rings, fab
from on Feb 20th 2018
from on Jan 17th 2018
Très bon produit, facile à installer et très efficace.

Merci Forge
from on Oct 3rd 2017
Excellent service kit with new design piston holds boost perfectly.
from on Sep 13th 2017
Great product, but i think it's really expensive. Only received three seals and a dot of grease for 30 euro including shipment to Holland... this was for a FDV 008 diverter valve. As the base product is already that expensive i would've thought maintanance would be cheaper on it.
from on Jul 17th 2017
Fantastic service, arrived next day, fitted and then on track the day after !. Excellent work.
from on Jul 12th 2017
Excellent service from forge once again!! great products at a great cost!! �
from on Jun 28th 2017
Brilliant service kit nice and simple to replace. Ordered Friday didn't get sent out until following Wednesday was my only issue. Apart from that brilliant.
from on Apr 10th 2017
Ordered a service kit for my Dmvsplitter, arrived next day brilliant service and getting the right parts.
from on Mar 19th 2017 Verified Purchase
excellent service from these guys, originally purchased the wrong service kit for a recirc, got in touch and asked to return it, was told they'll send out the correct kit free of charge and I could keep the original order. Amazing customer serviceand fast delivery
from on Aug 8th 2016 Verified Purchase
Had my FMFSITAT Valve installed on two cars for the last 5 years and it has worked perfectly with only a couple of cleans and regreases during that time. Never missed a beat until recently. A 5min clean, refresh of O rings and fresh grease and it's probably good for the next 5 years. Fast delivery, great service and AWESOME products! Can't beat Forge.
from on Jul 21st 2016 Verified Purchase
Great service from a friendly team, bought a service kit for my forge dump valve. Quick delivery to.
from on Jul 6th 2016 Verified Purchase
Awsome service very helpfull and fast email replys
Delivery was super fast cannot fault
from on May 13th 2016 Verified Purchase
fast delivery and i had a old valve so the piston wasn't right. they sorted it out for me and it was received the day after i spoke to them

brilliant service
from on May 11th 2016 Verified Purchase
Great service and fast delivery, was cheaper to buy directly from Forge than buying it elsewhere, there was plenty of lubricant supplied useful for routine maintenance to ensure your recirc lasts a long time.
from on Feb 25th 2016 Verified Purchase
Brilliant service great kit 5* service
from on Sep 12th 2015
Great quality service kit for my valve, fast delivery. 5* from Forge

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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.



For info on how to service your valve, click on the 'Instructions' tab above or visit our guides here


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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Hello, I have a damaged seal on a blue Forge recirculating valve. It has a twist off cap, yellow spring and a chrome piston. It’s on a mk4 1.8T golf. I can’t find the part number to order a servicing kit. Which kit do I need?

by description sounds like our discontinued FMCL007P, but service kits are still available and can be ordered by selecting FMCL007P from the options drop down menu on the valve service kit page FMDVSK.


Hi I need kit repair o ring and spring for bov f30 335i how I can order

When in the valve service kit product page please select the Forge Motorsport valve code you have installed from the options drop down menu.

I have an FMDV34R valve. I don’t see that listed in the drop down menu for rebuild kits. Please advise.

Hello this is the correct product code and the FMDV34R is in the drop down in the first quarter of the menu.

Hiya I have a forge 007 older style 1.8t golf recirculation valve what is rebuild code sorry I have had for years and can't find box and don't want to guess


Yes this is the correct products code, then select your valve from the drop down menu (FMCL007P).

Hi , could you tell me the product code for the vw up gti dump valve service kit please

Hello. Depending on the version you ordered, it will be FMDV9, or FMDV18. You can find the code on your original proof of purchase, or please reply directly and we can assist. 

Hi sorry me again, you kindly sent me a part no for a service kit for fmdvf14a ( abarth punto evo blow off valve ) the number you sent me was FMDVSK- K04A . Sorry but I can't find this number on the drop down for your service kits or anywhere else . Could you please advise as I desperately need the o rings . Thank you .

The correct product code to select from the option drop down menu  when on the Forge Motorsport valve service kit product page is FMDVF14A, which is located just under halfway down the options drop down menu; however, the label on the kit package will read FMDVSK-K04A; apologies for not making this clearer in the original answer.


Hi, how do I find my valve number ? Many thanks, kyle.

Hello. You will be able to find you valve number on your original order, or on the label on the side of the box. It will start 'FM' - should you need further assistance, please let us know 

Hello, i am driving 208 gti bps with n18 engine. I want to service my loud version dumpvalve, Which valve code should i enter?


The valve code you need to enter is FMDVR60A.

Hi, I have the n54 diverter valves on my 135i, I need to service both valves. Could you advise on the kit I need and quantity please (two service kits required for both valves?) Thanks a bunch!

Hello Jack. You will need to select from the dropdown, FMDVBM35 which is the appropriate kit for your valve, which will include 2 of everything for the twin valves.

Hi, I have this hard pipe on my n54 335i; can I order a replacement o-ring for the hard pipe join to the throttle body, or is this a manufacturer part? Thanks

Hello, Please email your address and we will send a set out for you FOC