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- Flanged for OEM Donut Gasket
- Machined lip centers 2-Bolt Gasket
- CNC Machined Steel Construction (Zinc coated for durability)
- Simple bolt on installation (Supplied with quality hardware)
- Includes GrimmSpeed 3" 2x Thick Gasket (For a PERFECT seal!)
Install Your WRX or STI Cat Back Exhaust the Right Way
Exhaust Leaks are a Thing of The Past, especially with the GrimmSpeed Stock Downpipe to 3inch Exhaust Adapter. When installing a new cat back exhaust, exhaust leaks are a super common problem especially on the 2015-2020 Subaru WRX and STI’s. The most common issue we hear about is from running an OEM downpipe with an aftermarket 3” cat back exhaust without a proper adapter. Use this adapter to allow you to keep your stock donut gasket for the best solution to finally put an end to that pesky leak.
Quality Made for Peace of Mind
CNC machined from mild steel and zinc coated for durability and longevity, this thing will outlast your car. Don't waste your time trying to get your OEM downpipe to seal without a donut gasket. In a short amount of time, they rust and corrode and will prevent you from ever getting a good seal with a typical flat gasket. Re-use your stock donut gasket along with a GrimmSpeed 2x Thick 3" Gasket (included) for a perfect seal on the first try! A final solution to pesky problems, it's what you can expect from GrimmSpeed.
- 2015-2020 Subaru WRX
- 2015-2020 Subaru STI
|Additional Warranty Information||None|
GrimmSpeed Stock Downpipe to 3inch Exhaust Adapter / 077046 Fits
6 customer reviews
If you are installing a new cat-back exhaust system, then you NEED this! Pretty straight forward and does as intended.
Excellent customer service! Ordered and delivered within the same week.
Sure glad I had it
Purchased this kit to install a Q300 on my 2017 WRX. The additional $39 was money well spent, if you are installing a cutback to your stock down pipe do yourself a favor and purchase this.
Got this to pair my new invidia r400 to my stock down pipe. Great part and coupled with a exhaust gasket that came with the cat back there is no way it will ever leak. The only bad part was the nuts and bolts where a little to small for the holes that where in the invidia exhaust flange, so I opted to use the invidia hardware. As always great quality from grimmspeed and still love the laffy taffy from the subispeed guys.
Fits great and eliminates any potential exhaust leak, I used this for my Invidia N1 Catback on my 2016 WRX Base and it fit great.
Fits And Works Perfect
If you're going to a cat back system definitely spend the extra money and get this adapter. Really easy to add on and gives great defense against exhaust leaks when tying to a stock downpipe.