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Stock DP>Aftermarket 3 in. Catback Adapter - Subaru

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Product Description



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" catback without a proper adaptor. Use an adaptor that allows you to retain your stock donut gasket for the best solution to finally end that pesky leak.

  • 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!)

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.

Fitment Note: Adaptor is only inteded to be used for connecting an OEM Downpipe to an aftermarket Catback. We produce a different adaptor for the opposite purpose.

Product Reviews

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Product Reviews

  1. Perfect fit

    Posted by Unknown

    This gasket fit perfectly between my stock '16 WRX DP and my 3" ETS exhaust. Quality product as usual from GS

  2. great product

    Posted by steve

    The material seems real solid. For ment was spot on. No complaints.

  3. Stock dp to aftermarket cat back adapter

    Posted by Unknown

    This adapter works great for retaining a stockdownpipe with a donut gasket when installing an aftermarket cat back the requires a 3 inch flange style. Also comes with the flange gaskets and hardware.

  4. Simple Easy Design

    Posted by Tobin

    This thing was easy to install and did the job perfect when you're just installing a catback to a stock DP. Well done guys.

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