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  1. Exhaust Systems
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  3. G37
  4. 2012
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FITS 2012 Infiniti G37
MagnaFlow Stainless Steel Cat-Back Exhaust System - Gas

MagnaFlow Stainless Steel Cat-Back Exhaust System - Gas

Retail:$2,323.54
Our Price: $1,610.47
You Save: $713.07
Exhaust Systems
Confirmed to Fit
2012 Infiniti G37

3.7L V6 Engine

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Shipping Weight: 58 lbs
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The best technical support and full exhaust systems installation instructions. Great price G37 exhaust systems and expert service. Infiniti G37, 2012 exhaust systems by MagnaFlow are available from etrailer.com. For expert service call 1-800-940-8924 to order your MagnaFlow Stainless Steel Cat-Back Exhaust System - Gas part number MF16820, or order online at etrailer.com.
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  • Reviews (22)
  • Q & A (0)
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2012 Infiniti G37 - MagnaFlow Stainless Steel Cat-Back Exhaust System - Gas

  • Cat-Back Exhaust
  • Gas
  • Rear Exit - Dual - Straight - Both Sides
  • 2-1/2 Inch Tubing Diameter
  • 4 Inch Tip Diameter
  • Stainless Steel
  • MagnaFlow

This cat-back exhaust system improves engine performance and durability by boosting horsepower and torque. Its technologically advanced, Mandrel bent tubing and straight-through muffler allow the exhaust to flow more freely through the system.


Features:

  • Improves engine performance by increasing horsepower, torque and fuel efficiency and decreasing exhaust gas temperature
    • Mandrel bent tubes allow for unrestricted airflow by maintaining the same diameter through every curve
      • Unrestricted airflow decreases back pressure ("exhaust turbulence")
    • Straight-through muffler has a stainless steel perforated core that runs straight through, end to end
      • Layer of stainless steel wool insulates the perforated core to absorb noise, shield high exhaust temperatures and prevent blowouts
      • Contains no baffles, chambers or louvers that restrict airflow
  • Signature sound is deep and throaty on throttle but quiet inside the vehicle
  • All materials made with 100% stainless steel
  • Clamps and hangers included for installation
  • Lifetime warranty

Specs:

  • Tubing diameter: 2-1/2"
  • Muffler dimensions: 5" tall x 8" wide x 18" long
  • Tailpipe diameter: 2-1/2"
  • Tip diameter: 4"
  • Number of tips included: 2
  • Dual exhaust system
  • Split rear exit position

The cat-back system is the portion of the exhaust system from the outlet of the catalytic converter to the tailpipe. MagnaFlow systems have Mandrel bent tubes that allow for unrestricted airflow by maintaining the same diameter throughout every curve. This curvature leads to decreased back pressure.

MagnaFlow mufflers have a stainless steel perforated core that runs straight through the muffler, end to end, with no baffles, chambers or louvers that restrict airflow. A layer of stainless steel wool insulates the perforated core to absorb noise, shield high exhaust temperatures and prevent blowouts.

Together, the Mandrel bent tubes and straight-through muffler increase horsepower, torque and fuel efficiency and decrease exhaust gas temperature. MagnaFlow's signature sound is deep and throaty on throttle but quiet inside vehicles. All materials are made with 100 percent stainless steel. Clamps and hangers are included for installation. It includes a lifetime warranty.

16820 MagnaFlow Cat-Back Exhaust System

Item # MF16820

Installation Details MF16820 Installation instructions


Customer Reviews

MagnaFlow Stainless Steel Cat-Back Exhaust System - Gas - MF16820

Average Customer Rating:  4.5 out of 5 stars   (22 Customer Reviews)

This cat-back exhaust system improves engine performance and durability by boosting horsepower and torque. Its technologically advanced, Mandrel bent tubing and straight-through muffler allow the exhaust to flow more freely through the system.

by:

Installation was easy, perfect fit, sounds great and engine roars! Thanks etrailer for the great customer service and MagnaFlow for a great product!



by:

Have to say that I was a bit skeptical at first, as I don't know anyone that has installed this particular kit. After installation, I am pleased to report that it has exceeded my high expectations. Kit came complete with everything needed to install (less the flange bolts). Initial sound was excellent...not too loud that it bothers the kids while they're sleeping in the car, but deep and loud enough to turn some heads. Excellent experience dealing with Etrailer as well. Will not hesitate to do business with them in the future. Thanks again for the super fast shipping and excellent customer service!



by:

My Magnaflow cat back exhaust system on my 2016 VW GTI gave me more of the sound I wanted for my little sports car, and it looks so much better than the stock exhaust system. Meaning: the stock muffler, which shows horizontally at the rear of the vehicle, looks like an afterthought, just a metal can. The muffler on the Magnaflow is hidden in a pocket near the center of the undercarriage, so it doesn't show at all. What is visible at the rear are the dual stainless steel pipes. In addition, the exhaust tips on the Magnaflow are larger in diameter to accommodate the larger diameter pipes, and therefore look more aggressive. I am very satisfied with the setup.



by:

The exhaust system fit perfectly, sounds great, and looks stylish. The exhaust tone is not overly loud, yet sounds much more powerful than the stock system did.



by:

Hardest part of installation was getting the truck high enough off the ground to get the factory exhaust over the axle. The new system was relatively easy and fit perfect. The spare tire does not fit underneath with this kit installed. I put a Tire Buddy in the bed to hold the full sized spare. The heavy duty factory receiver hitch is not in the way. System has a mellow purr that should be street legal everywhere yet is semi-aggressive. No blatting or popping. Chrome tips seem to always get black with soot and need to be cleaned often. This is a premium system and should last the life of your truck. It is well supported and doesn't vibrate. I highly recommend it. If Chevy had this as an option they would sell lots more trucks.



by:

Bought the magnaflow exhaust for my 2015 GMC. Everyone says how great it sounds. Price was good and easy to install.



by:

Very good performance and sounds installed myself in driveway in under 45 minutes. service was great from e-trailer.



by:

I am well pleased with the system itself. This was actually a replacement under the warranty, and the previous system lasted seven years, here in the rust belt. Only complaint was the necessity of returning to manufacturer for inspection prior to receiving replacement. That meant my truck was down for about a month.



by:

Great customer care and service from Chris and the Etrailer employee's. Got back to me to let me know of a item was back ordered from a manufacturer, didn't try to over sell me on products, asked what I'd like to do. Helped me make changes to my purchase that I needed right away. Two days later they now have my business shopping loyalty from here on out. I can't thank you guys enough.



by:

nice and growly sounding, helpful tip spay some wd 40 on ends before fitting together, helps to slide the parts together easier.



by:

Product nice. Fit could be better for trans am. Tail pipes don't show. Had to make extensions. Works ok now



by:

I believe it is the best exhaust on the market for this application. only thing is the exhaust tip needs bent down more as it touches the body and will melt plastic.



by:

Nice addition, not too loud and yet good rumble. Easy installation and would recommend it.



by:

Not a great fit on my 2009This kit sounds and looks great, but the three bolt cat flange didnt fit my truck, it required machining to spread the holes further apart, just a heads up my honda ridgeline was built in june of 2009 and the install took 5 hrs because of this issue, however when finished it sounds and looks great.



by:

Not a direct FitSounds good but had to modify rear brackets and drill holes in the frame to install on 09 F150 crew cab..not impressed with fitment or installation time..modification time caused loss of profit..



by:

The MagnaFlow exhaust looks and sounds awesome. Not only that but the stainless steel construction and lifetime warranty gives me peace of mind.



by:

Excellent exhaust note through out the entire RPM range! Highly recommended this cat back system.



by:

Easy install, perfect fit on my 07 Tacoma. After computer reset, several miles, truck runs Awsome. Great seat of pants torque increase, combined with my Injen cold are intake truck is way quick and has much throatier note.



by:



by:

Looks and sounds great, not at all loud but a nice rumble that I can enjoy.



by:

Easy to install sounds great I love the product it looks good too I'll try to get pictures up later



by:

I am so disappointed with this product ..i spend almost a grand and the sound of the exhaust is not good at all... I wish i can return this ...


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See what our Experts say about this MagnaFlow Exhaust Systems

  • Will a Resonated Exhaust Tip Make my 2011 Infiniti G37 Louder
    The Bully Round Exhaust Tip part # PM-5104 has a resonated body which will provide a slightly more "crackly" sounding exhaust for your 2011 Infiniti G37 but will not exactly make it any noticeably louder. As long as your exhaust piping is between 1-3/4" to 2-1/2" in diameter then the above exhaust tip will work well for you. To really get the greatest sound output out of your 2011 Infiniti G37 with the 3.7L V6 engine you will want to install a MagnaFlow Exhaust System like part # MF16820....
    view full answer...

Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Leah B
Edited By:
Leah B

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