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GrimmSpeed OEM Downpipe to 3in Cat Back Adapter ( Part Number:GRM 077046)

GrimmSpeed OEM Downpipe to 3in Cat Back Adapter

MODEL # GRM 077046
Manufacturer Part # 077046

$39.00

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Description
Exhaust leaks seem to be an all-too-common issue with most modded Subaru’s. 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.

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 for a perfect seal on the first try!
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RallySport Guarantee - 30 Days


Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.


SPECIFICATIONS

Brand: Grimmspeed
Gasket Layers: 3
Material: Stainless Steel
QTY: 1
Mfgr. Warranty: Limited Lifetime
Return Policy:

RallySport Guarantee - 30 Days


Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
RallySport Guarantee

4.8

5 STAR
89%
4 STAR
8%
3 STAR
2 STAR
1 STAR
3%
Verified Purchase

A necessary inconvenience
vash337 26 days ago
Having held on to my GS "3in dp to stock catback" adapter from my last car, it was inconvenient to discover I needed this piece which came to 60 bucks with 2 day shipping. But it's necessary for an easy install. Just bite the bullet and get it. I plan to hold on to both for the future instead of possibly repurchasing.
Verified Purchase

Indispensable for OEM or Cobb downpipes!
NickyG 27 days ago
If you're running a Cobb or OEM downpipe mated to a 3" exhaust, this is the only adapter you need for a leak-free connection. Burly construction and nicely machined. It bolted right up and has been leak free. The bolts are ridiculously long, but this does not impact its functioning. GS makes really nice stuff, and this adapter is an excellent example. Highly recommended!

If you're only going cat-back you need this
tjwreds37280 1 month ago
doest what it says. Adapts stock downpipe to 3 inch catback. No leaks.
Verified Purchase

Neat part!
andychobbs20230 3 months ago
Great part that needs slightly better, like 30 cents better, washers and hardware. GREAT PART. Lousy Washers. GS is an amazing company, so by the time you read this, they'll have that tidied up. I gave it four stars for value because I had to find washers that IMHO should have been included. I'd buy pretty much anything GS sells, so...
Verified Purchase

Quality as usual
singletrackmind57575440 4 months ago
Story to sum up this part: My Invidia catback came with bolts that didn't even fit the stock downpipe... I turned to the box with the Grimmspeed adaptor and thought "no worries, I bet Grimmspeed sent bolts for both stock and aftermarket DPs". Opened up the box, and indeed they had. Quality part from a quality company. Recommended for sure.

  • Q: Car fitment    3 days ago

    Answer

    Will this fit on my 09 sti hatchback And why does it not need spring bolts


    • A: This does fit your 2009 STI and it comes with aftermarket bolts that replace the spring bolts.


      Tyler.G 2 days ago
  • Q: Invidia n1 catback.   gingerdrummer01 1 month ago

    Answer

    Would this adapter work for connecting an Invidia N1 race to the stock downpipe on a 2002 WRX wagon? Thanks for the help.


    • A: Yes this would be the correct adapter. You may also want to purchase a new donut gasket.


      Tyler.G 1 month ago
  • Q: Hello  jbang267 4 months ago

    Answer

    Hello, I was wondering if i had a Cobb catted downpipe Will this adapter work if i get a 3" catback system?


    • A: Yes, this adapter will work with that system and downpipe.


      Josh P. 4 months ago
  • Q: Fitment  WReXy 4 months ago

    Answer

    Is this what I need to be able to install my N1 CBE to stock downpipe? Heeeelp, didn't know before ordering the exhaust :/


    • A: This adapter is recommended for that exhaust while using a Subaru OEM downpipe.


      Evan M. 4 months ago
  • Q: Exhaust seal  Neez 06 6 months ago

    Answer

    I want to connect oem dp to 3in CB. To get a perfect seal with this product , will I still need to use the stock donut gasket on the dp side and a 3in gasket on the CB side?


    • A: Yes, you will want the OEM donut gasket on the down pipe, then the adapter, then the gasket to the catback. There is a picture under User Media on this product page that gives a good explanation of how the products should sit.


      Chris W. 5 months ago
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