






🚗 Tune your Focus ST’s sound and boost control like a boss!
The 4-0300 Symposer Delete with Pressure Port is a precision-engineered upgrade for 2013-2018 Ford Focus ST/ST250 models that removes the factory symposer to refine cabin sound while integrating a versatile 1/8” NPT pressure port. Designed for easy installation and reversible use, it supports both negative and positive pressure systems, making it a must-have for enthusiasts seeking enhanced turbo management and a cleaner driving experience.





| ASIN | B08NFZ28TF |
| Best Sellers Rank | #618,411 in Automotive ( See Top 100 in Automotive ) #554 in Automotive Replacement Fuel Injection Pressure Regulators |
| Brand | salangid |
| Customer Reviews | 4.7 4.7 out of 5 stars (259) |
| Date First Available | November 13, 2020 |
| Item Weight | 0.634 ounces |
| Manufacturer | metalblock |
| Manufacturer Part Number | 4-0300 |
| Product Dimensions | 3 x 2 x 2.1 inches |
J**T
Perfect Fit
Installed on my 2014 Focus st. Fit perfectly no issues. Seems like High quality material. No reason to buy a more expensive brand. does exactly what its supposed too.
J**L
Used on my 2014 FoST
If you are looking for this, you should already know what this is and does for your Focus ST. 2014 FoST here and I came here to get this to tame down my Turbosmart 50/50 BOV while it was connected to the solenoid. I used this kit to route a high temp hose to run a true vacuum to the BOV. Now the BOV is no longer going off every time I get off the gas. It now goes off on a decent load. The kit was complete but I would recommend your own zip tie, this one is tiny. Also I used a 90 degree pressure port and teflon taped it as well. All works perfectly! The look of plate is nice and solid with a good o-ring and looks durable
M**M
No more drone!!
Easy to install and had all the parts included. I did have some bad drone from my straight pipe on my Focus ST but with this it cut most of it out! Would recommend to anyone with bad cabin drone. Only thing was I added some Teflon tape on the threads to hold the little bolt in place. Without the tape the bolt kind of feels loose in the housing and I didn’t want to chance it going into the engine.
A**.
Good stuff
Day late but hey can't help the amazon team they be late sometimes but hey the item is super solid metal and it bolted right in only downside is I didn't have the right size wrench for the nipple to true turbo so I had to use a paper towel and slightly bigger wrench otherwise I know have true turbo stututut sounds instead of my bov acting like a 90 year trying to blow out there birthday candles every ten seconds lol 😆 2018 focus st
M**E
Great product but just to expensive for what it is.
It works great and you can run a line from it to your bov for a true vacuum source. But the main issues is that they charge 30 bucks for it!! It is a piece of aluminum with a small O ring on it. Its just hard to justify the purchase just for a little bit less cabin noise.
M**S
Works as intended on my 2017 Focus ST; see tip in the review below, though.
The product works as intended and for a reasonable price (compared to the others charging way more for the same thing). I will give you this tip, though: if you plan on running any kind of aftermarket BOV, then ditch the provided fitting and replace it with one that has a 5/16" barbed hose end; the one provided is woefully inadequate for anything more than just a boost gauge. The new fitting I chose is the 45-degree style that helps routing the hose to the BOV easier.
A**N
Good Fit
Fit as expected. Nice delete kit.
B**N
Works well
Does the job intended for!
M**L
easiest way to grab a boost line!
Trustpilot
2 weeks ago
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