Great news – on this purchase, you'll enjoy a BuildBUX bonus of $0.60.
OEM Downpipe to aftermarket 3" cat back exhaust.
Exhaust leaks seem to be an all-too-common issue with most modded Subarus. They tend to spring up out of nowhere and cause hours of troubleshooting headaches. One of the most common leaks that we hear about is from running an OEM downpipe with an aftermarket 3" cat back without a proper adapter. Use an adapter that allows you to retain your stock donut gasket for the best solution to finally end that pesky leak.
GrimmSpeed's adapter is 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!
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| Loudness |
Rated 2 out of 5
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an adapter is required when installing the invidia q300 on vb wrx with stock intermediate pipe, works perfect and quality is good.
| Loudness |
Rated 1 out of 5
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Adapter fits perfectly as advertised!!
| Loudness |
Rated 1 out of 5
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Perfect
| Loudness |
Rated 5 out of 5
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Nice!!!
Prevents exhaust leak! Perfect fitment!
| Loudness |
Rated 3 out of 5
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Great quality, and fast shipping. Definitely heavy duty.
| Loudness |
Rated 1 out of 5
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Worked great and no leaks in the exhaust 👍
Just get it before you have to come back and order it. and she thicc. 10/10
| Loudness |
Rated 1 out of 5
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Worked perfectly with my new exhaust. Definitely recommend this if you’re upgrading to a catback.
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Rated 1 out of 5
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Worked perfectly with the Remark R1 Spec CBE. It comes with better bolts (my stock ones bent during removal) to secure to the existing pipe and seals great. Definitely grab one of these if you’re doing a CBE!
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Rated 1 out of 5
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