Brand: Forge Motorsport

Forge Motorsport Service Kit

Product code: FMDVSK

Please select product options and quantities below:

Product Options:


Product Description

*Pictures displayed above are not necessarily representative of the kit you will recieve, this is dependant on your chosen valve service kit*

Please select your valve code from the drop down menu above.

If you wish to rebuild or service your Forge product, we can offer a kit of replacement parts. By servicing your Valve/Adaptor at regular intervals, you can ensure the longevity of your Forge Motorsport product.

These kits vary with your chosen product but typically contain a replacement piston with suitable "O" rings or diaphragm as may be required. Please select in the options above, the product you require the kit for.

Most Dump Valve service kits ONLY contain replacement O-rings, piston, and grease. Blow Off Adaptors contain just replacement O-rings. 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.

*As many of our valves use the same internals, the part number you receive may be a universal part number*


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 Jun 19th 2021
Fast shipping. Works great. Bov works like new 👍🏼 from on Aug 24th 2020
Fast Delivery and Customer Service is Top Shelf! from on Jul 9th 2020
Very helpful with questions I had and got the right parts I needed. from on Jul 4th 2020
Highly recommend. This kit made my bov like new again. Works amazing.
from on Nov 8th 2019
Little disappointed that that I didn't get new spring and piston like the products shown in picture I got a small spring all the rubber orings and grease but still gonna use it this product really should have the rebuild kit with everything included to remove from the bpv
green sping little spring pistons o rings and grease
from on Jul 23rd 2019
Product arrived very quick and will work out just fine, in the picture they had a yellow spring pictured with it so I thought I was getting the yellow spring along with piston and o-rings, in all honesty I really wanted the yellow spring first and a piston rebuild second reached out to Sean Lyle
And he said he would get back with me
from on Dec 10th 2018
I wanted to service my BPV during the Black Friday sale - for Mazdaspeeds miata.
At the beginning the model wasn't available - but a quick mail to the site solved that issue within a day! Making sure I can enjoy the sale.

Took a bit of time (Black Friday) but I got everything I expected in the kit + a NEW set of all 3 springs that came with the BPV which I lost throughout time. I was very surprised to get everything to this extent. Great job guys!

Only thing I could ask is a service guide / link to one on the site.
Happens that I found one online so not an issue - just nice to have.
from on Dec 8th 2018
Ordered this along with a new solenoid. Customer service was more than helpful and sent me a video on how to replace the seals and grease up. These are stand up guys who stand by their product and im happy yo have their parts on my vehicle. Thank you.
from on Mar 30th 2018
Once again great service and good price.
from on Aug 8th 2017
Great price, great product. Easily return your part to it's original performance.
from on Dec 26th 2016
Fast service and good sale prices.
from on Dec 26th 2016
Fast service and good sale prices. I'd rate it five stars but as soon as I choose the stars they go to 0 stars?satrs
5 stars - 5 stars
from on Nov 14th 2016
I wanna say thank you first..this is awesome complete kit for your bov.and it sets perfect..and works really good thank you we do business with you again.
from on Sep 12th 2016
When i want performance parts i always buy from you guys. Quality parts.. my BOV has been performing flawlessly for 7 yrs now.. thxx..
from on Sep 12th 2016
Always order from ECS for my GTi . Part always arrives quickly and as described. I like the fact that you carry all of the OEM parts i need..
from on Jun 24th 2016
Kit came with everything I needed to service my BPV. Grease, O rings and a new piston. Instructions were a little unclear to determine if a seal was made but since I was using the blue spring, the piston did move to almost closed when I plugged the vacuum outlet with my finger. Emailed support, they got back to me within minutes! Car feels much better now and boost is more accurate. I recommend they include instructions with every shipment or provide a link in the box. Had to do some searching to make sure I was doing it right. . the review feature isn't working with my browser so when i put my cursor over the stars it goes to zero so its either 5 or 0. 4 stars....
from on Mar 31st 2016
I only needed one O ring, and the special grease.
I got the o rings, new piston that is different than the current one (for supersize diverter)...
from on Feb 23rd 2016
Product is just what i needed. Shipping was super slow. For $15 shipping cost you can ship a small item usps and arrive in 2 days. surprising they havent figured this out yet. Product 5 star shipping -5 star

Forge response
Thank you for choosing Forge
we will look into our shipping costs , our apologies
from on Jan 26th 2016
Works really well. My specific application was for a 2015 MK7 GTI. The kit comes with everything pictured EXCEPT the spring. Which sucks because I had to order the tuning kit just to get the spring. Although the spring is not considered a rebuild product, I bought my BPV used and the previous owner lost the yellow spring that is factory which I needed. Then shipping is $15 so it's really like this kit is $32. Which wouldn't be so bad except it was shipped the slowest way possible and took 10 days from order to get here. 10 days! I rate the product 5 stars but the shipping I rate 2 stars. The price is extremely fair but the shipping shouldn't cost more or even equal to the product. Overall I'd buy again. I'll just gripe until it gets here, which will probably be another 10 days.

Forge response
Thank you for the 5 star review on the product.
Clearly we failed on the shipping of the spring , we will look to improve our service to you .
I accidentally ruined a seal by overtightening. When trying to "fix" my bov I cleaned up the broken seal pieces and unknowingly took off the grease from the bov. This caused my BOV to seep air when full throttle and going into the next gear. I luckily came across this kit and purchased it. I recently replaced all the seals and greased the BOV and have remedied my issue. Shipping was quick and the customer service was excellent.
everything fit perfect and the bov/springs seems much more solid
quick shipping

Want to leave a review?

Login Register FREE!

Compatible Vehicles



Warranty Infomation

All Forge Motorsport products come with a limited lifetime warranty. 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.



Please fill out your details below 

We use Mailchimp as our marketing automation platform. By clicking submit to this form, you acknowledge that the information you provide will be transferred to MailChimp for processing in accordance with their Privacy Policy and Terms.

* indicates required

Terms and Conditions

Forge Motorsport will use the information you provide on this form to be in touch with you and to provide updates and marketing. You can change your mind at any time by clicking the unsubscribe link in the footer of any email you receive from us, or by contacting us at We will treat your information with respect. For more information about our privacy practices please visit our website. By clicking subscribe, you agree that we may process your information in accordance with these terms.